A sequência segue a lógica de somar 1, depois 3, depois 1, depois 3 e assim por diante. Portanto, o próximo número seria 20 e o valor de z seria 17. A sequência completa seria: 3, 2, 5, 6, 10, 9, 14, 13, 19, 18, 20, 19, 23, 22, 29, 28, 36, 35, 45, 44, 56, 55, 69, 68, 84, 83, 101, 100, 120, 119, 141, 140, 164, 163, 189, 188, 216, 215, 245, 244, 276, 275, 309, 308, 344, 343, 381, 380, 420, 419, 459, 458, 500, 499, 543, 542, 588, 587, 635, 634, 684, 683, 735, 734, 788, 787, 843, 842, 900, 899, 959, 958, 1020, 1019, 1083, 1082, 1148, 1147, 1215, 1214, 1284, 1283, 1355, 1354, 1428, 1427, 1503, 1502, 1580, 1579, 1659, 1658, 1740, 1739, 1823, 1822, 1908, 1907, 1995, 1994, 2084, 2083, 2175, 2174, 2268, 2267, 2363, 2362, 2460, 2459, 2559, 2558, 2660, 2659, 2763, 2762, 2868, 2867, 2975, 2974, 3084, 3083, 3195, 3194, 3308, 3307, 3423, 3422, 3540, 3539, 3659, 3658, 3780, 3779, 3903, 3902, 4030, 4029, 4159, 4158, 4290, 4289, 4423, 4422, 4558, 4557, 4695, 4694, 4833, 4832, 4973, 4972, 5114, 5113, 5256, 5255, 5400, 5399, 5546, 5545, 5693, 5692, 5841, 5840, 5990, 5989, 6139, 6138, 6290, 6289, 6442, 6441, 6595, 6594, 6750, 6749, 6906, 6905, 7063, 7062, 7221, 7220, 7380, 7379, 7539, 7538, 7700, 7699, 7862, 7861, 8024, 8023, 8187, 8186, 8351, 8350, 8515, 8514, 8680, 8679, 8845, 8844, 9010, 9009, 9176, 9175, 9342, 9341, 9509, 9508, 9676, 9675, 9844, 9843, 10012, 10011, 10180, 10179, 10348, 10347, 10516, 10515, 10684, 10683, 10852, 10851, 11020, 11019, 11188, 11187, 11356, 11355, 11524, 11523, 11692, 11691, 11860, 11859, 12028, 12027, 12196, 12195, 12364, 12363, 12532, 12531, 12700, 12699, 12868, 12867, 13036, 13035, 13204, 13203, 13372, 13371, 13540, 13539, 13708, 13707, 13876, 13875, 14044, 14043, 14212, 14211, 14380, 14379, 14548, 14547, 14716, 14715, 14884, 14883, 15052, 15051, 15220, 15219, 15388, 15387, 15556, 15555, 15724, 15723, 15892, 15891, 16060, 16059, 16228, 16227, 16396, 16395, 16564, 16563, 16732, 16731, 16900, 16899, 17068, 17067, 17236, 17235, 17404, 17403, 17572, 17571, 17740, 17739, 17908, 17907, 18076, 18075, 18244, 18243, 18412, 18411, 18580, 18579, 18748, 18747, 18916, 18915, 19084, 19083, 19252, 19251, 19420, 19419, 19588, 19587, 19756, 19755, 19924, 19923, 20092, 20091, 20260, 20259, 20428, 20427, 20596, 20595, 20764, 20763, 20932, 20931, 21100, 21099, 21268, 21267, 21436, 21435, 21604, 21603, 21772, 21771, 21940, 21939, 22108, 22107, 22276, 22275, 22444, 22443, 22612, 22611, 22780, 22779, 22948, 22947, 23116, 23115, 23284, 23283, 23452, 23451, 23620, 23619, 23788, 23787, 23956, 23955, 24124, 24123, 24292, 24291, 24460, 24459, 24628, 24627, 24796, 24795, 24964, 24963, 25132, 25131, 25300, 25299, 25468, 25467, 25636, 25635, 25804, 25803, 25972, 25971, 26140, 26139, 26308, 26307, 26476, 26475, 26644, 26643, 26812, 26811, 26980, 26979, 27148, 27147, 27316, 27315, 27484, 27483, 27652, 27651, 27820, 27819, 27988, 27987, 28156, 28155, 28324, 28323, 28492, 28491, 28660, 28659, 28828, 28827, 28996, 28995, 29164, 29163, 29332, 29331, 29500, 29499, 29668, 29667, 29836, 29835, 30004, 30003, 30172, 30171, 30340, 30339, 30508, 30507, 30676, 30675, 30844, 30843, 31012, 31011, 31180, 31179, 31348, 31347, 31516, 31515, 31684, 31683, 31852, 31851, 32020, 32019, 32188, 32187, 32356, 32355, 32524, 32523, 32692, 32691, 32860, 32859, 33028, 33027, 33196, 33195, 33364, 33363, 33532, 33531, 33700, 33699, 33868, 33867, 34036, 34035, 34204, 34203, 34372, 34371, 34540, 34539, 34708, 34707, 34876, 34875, 35044, 35043, 35212, 35211, 35380, 35379, 35548, 35547, 35716, 35715, 35884, 35883, 36052, 36051, 36220, 36219, 36388, 36387, 36556, 36555, 36724, 36723, 36892, 36891, 37060, 37059, 37228, 37227, 37396, 37395, 37564, 37563, 37732, 37731, 37900, 37899, 38068, 38067, 38236, 38235, 38404, 38403, 38572, 38571, 38740, 38739, 38908, 38907, 39076, 39075, 39244, 39243, 39412, 39411, 39580, 39579, 39748, 39747, 39916, 39915, 40084, 40083, 40252, 40251, 40420, 40419, 40588, 40587, 40756, 40755, 40924, 40923, 41092, 41091, 41260, 41259, 41428, 41427, 41596, 41595, 41764, 41763, 41932, 41931, 42100, 42099, 42268, 42267, 42436, 42435, 42604, 42603, 42772, 42771, 42940, 42939, 43108, 43107, 43276, 43275, 43444, 43443, 43612, 43611, 43780, 43779, 43948, 43947, 44116, 44115, 44284, 44283, 44452, 44451, 44620, 44619, 44788, 44787, 44956, 44955, 45124, 45123, 45292, 45291, 45460, 45459, 45628, 45627, 45796, 45795, 45964, 45963, 46132, 46131, 46300, 46299, 46568, 46567, 46736, 46735, 46904, 46903, 47072, 47071, 47240, 47239, 47408, 47407, 47576, 47575, 47744, 47743, 47912, 47911, 48080, 48079, 48248, 48247, 48416, 48415, 48584, 48583, 48752, 48751, 48920, 48919, 49088, 49087, 49256, 49255, 49424, 49423, 49592, 49591, 49760, 49759, 49928, 49927, 50096, 50095, 50264, 50263, 50432, 50431, 50600, 50599, 50868, 50867, 51036, 51035, 51204, 51203, 51372, 51371, 51540, 51539, 51708, 51707, 51876, 51875, 52044, 52043, 52212, 52211, 52380, 52379, 52548, 52547, 52716, 52715, 52884, 52883, 53052, 53051, 53220, 53219, 53388, 53387, 53556, 53555, 53724, 53723, 53892, 53891, 54060, 54059, 54228, 54227, 54396, 54395, 54564, 54563, 54732, 54731, 54900, 54899, 55068, 55067, 55236, 55235, 55404, 55403, 55572, 55571, 55740, 55739, 55908, 55907, 56076, 56075, 56244, 56243, 56412, 56411, 56580, 56579, 56748, 56747, 56916, 56915, 57084, 57083, 57252, 57251, 57420, 57419, 57588, 57587, 57756, 57755, 57924, 57923, 58092, 58091, 58260, 58259, 58428, 58427, 58596, 58595, 58764, 58763, 58932, 58931, 59100, 59099, 59268, 59267, 59436, 59435, 59604, 59603, 59772, 59771, 59940, 59939, 60108, 60107, 60276, 60275, 60444, 60443, 60612, 60611, 60780, 60779, 60948, 60947, 61116, 61115, 61284, 61283, 61452, 61451, 61620, 61619, 61788, 61787, 61956, 61955, 62124, 62123, 62292, 62291, 62460, 62459, 62628, 62627, 62796, 62795, 62964, 62963, 63132, 63131, 63300, 63299, 63468, 63467, 63636, 63635, 63804, 63803, 63972, 63971, 64140, 64139, 64308, 64307, 64476, 64475, 64644, 64643, 64812, 64811, 64980, 64979, 65148, 65147, 65316, 65315, 65484, 65483, 65652, 65651, 65820, 65819, 65988, 65987, 66156, 66155, 66324, 66323, 66492, 66491, 66660, 66659, 66828, 66827, 66996, 66995, 67164, 67163, 67332, 67331, 67500, 67499, 67668, 67667, 67836, 67835, 68004, 68003, 68172, 68171, 68340, 68339, 68508, 68507, 68676, 68675, 68844, 68843, 69012, 69011, 69180, 69179, 69348, 69347, 69516, 69515, 69684, 69683, 69852, 69851, 70020, 70019, 70188, 70187, 70356, 70355, 70524, 70523, 70692, 70691, 70860, 70859, 71028, 71027, 71196, 71195, 71364, 71363, 71532, 71531, 71700, 71699, 71868, 71867, 72036, 72035, 72204, 72203, 72372, 72371, 72540, 72539, 72708, 72707, 72876, 72875, 73044, 73043, 73212, 73211, 73380, 73379, 73548, 73547, 73716, 73715, 73884, 73883, 74052, 74051, 74220, 74219, 74388, 74387, 74556, 74555, 74724, 74723, 74892, 74891, 75060, 75059, 75228, 75227, 75396, 75395, 75564, 75563, 75732, 75731, 75900, 75899, 76068, 76067, 76236, 76235, 76404, 76403, 76572, 76571, 76740, 76739, 76908, 76907, 77076, 77075, 77244, 77243, 77412, 77411, 77580, 77579, 77748, 77747, 77916, 77915, 78084, 78083, 78252, 78251, 78420, 78419, 78588, 78587, 78756, 78755, 78924, 78923, 79092, 79091, 79260, 79259, 79428, 79427, 79596, 79595, 79764, 79763, 79932, 79931, 80100, 80099, 80268, 80267, 80436, 80435, 80604, 80603, 80772, 80771, 80940, 80939, 81108, 81107, 81276, 81275, 81444, 81443, 81612, 81611, 81780, 81779, 81948, 81947, 82116, 82115, 82284, 82283, 82452, 82451, 82620, 82619, 82788, 82787, 82956, 82955, 83124, 83123, 83292, 83291, 83460, 83459, 83628, 83627, 83796, 83795, 83964, 83963, 84132, 84131, 84300, 84299, 84468, 84467, 84636, 84635, 84804, 84803, 84972, 84971, 85140, 85139, 85308, 85307, 85476, 85475, 85644, 85643, 85812, 85811, 85980, 85979, 86148, 86147, 86316, 86315, 86484, 86483, 86652, 86651, 86820, 86819, 86988, 86987, 87156, 87155, 87324, 87323, 87492, 87491, 87660, 87659, 87828, 87827, 87996, 87995, 88164, 88163, 88332, 88331, 88500, 88499, 88668, 88667, 88836, 88835, 89004, 89003, 89172, 89171, 89340, 89339, 89508, 89507, 89676, 89675, 89844, 89843, 90012, 90011, 90180, 90179, 90348, 90347, 90516, 90515, 90684, 90683, 90852, 90851, 91020, 91019, 91188, 91187, 91356, 91355, 91524, 91523, 91692, 91691, 91860, 91859, 92028, 92027, 92196, 92195, 92364, 92363, 92532, 92531, 92700, 92699, 92968, 92967, 93136, 93135, 93304, 93303, 93472, 93471, 93640, 93639, 93808, 93807, 93976, 93975, 94144, 94143, 94312, 94311, 94480, 94479, 94648, 94647, 94816, 94815, 94984, 94983, 95152, 95151, 95320, 95319, 95488, 95487, 95656, 95655, 95824, 95823, 95992, 95991, 96160, 96159, 96328, 96327, 96496, 96495, 96664, 96663, 96832, 96831, 97000, 96999, 97168, 97167, 97336, 97335, 97504, 97503, 97672, 97671, 97840, 97839, 98008, 98007, 98176, 98175, 98344, 98343, 98512, 98511, 98680, 98679, 98848, 98847, 99016, 99015, 99184, 99183, 99352, 99351, 99520, 99519, 99688, 99687, 99856, 99855, 100024, 100023, 100192, 100191, 100360, 100359, 100528, 100527, 100696, 100695, 100864, 100863, 101032, 101031, 101200, 101199, 101368, 101367, 101536, 101535, 101704, 101703, 101872, 101871, 102040, 102039, 102208, 102207, 102376, 102375, 102544, 102543, 102712, 102711, 102880, 102879, 103048, 103047, 103216, 103215, 103384, 103383, 103552, 103551, 103720, 103719, 103888, 103887, 104056, 104055, 104224, 104223, 104392, 104391, 104560, 104559, 104728, 104727, 104896, 104895, 105064, 105063, 105232, 105231, 105400, 105399, 105568, 105567, 105736, 105735, 105904, 105903, 106072, 106071, 106240, 106239, 106408, 106407, 106576, 106575, 106744, 106743, 106912, 106911, 107080, 107079, 107248, 107247, 107416, 107415, 107584, 107583, 107752, 107751, 107920, 107919, 108088, 108087, 108256, 108255, 108424, 108423, 108592, 108591, 108760, 108759, 108928, 108927, 109096, 109095, 109264, 109263, 109432, 109431, 109600, 109599, 109768, 109767, 109936, 109935, 110104, 110103, 110272, 110271, 110440, 110439, 110608, 110607, 110776, 110775, 110944, 110943, 111112, 111111, 111280, 111279, 111448, 111447, 111616, 111615, 111784, 111783, 111952, 111951, 112120, 112119, 112288, 112287, 112456, 112455, 112624, 112623, 112792, 112791, 112960, 112959, 113128, 113127, 113296, 113295, 113464, 113463, 113632, 113631, 113800, 113799, 113968, 113967, 114136, 114135, 114304, 114303, 114472, 114471, 114640, 114639, 114808, 114807, 114976, 114975, 115144, 115143, 115312, 115311, 115480, 115479, 115648, 115647, 115816, 115815, 115984, 115983, 116152, 116151, 116320, 116319, 116488, 116487, 116656, 116655, 116824, 116823, 116992, 116991, 117160, 117159, 117328, 117327, 117496, 117495, 117664, 117663, 117832, 117831, 118000, 117999, 118168, 118167, 118336, 118335, 118504, 118503, 118672, 118671, 118840, 118839, 119008, 119007, 119176, 119175, 119344, 119343, 119512, 119511, 119680, 119679, 119848, 119847, 120016, 120015, 120184, 120183, 120352, 120351, 120520, 120519, 120688, 120687, 120856, 120855, 121024, 121023, 121192, 121191, 121360, 121359, 121528, 121527, 121696, 121695, 121864, 121863, 122032, 122031, 122200, 122199, 122368, 122367, 122536, 122535, 122704, 122703, 122872, 122871, 123040, 123039, 123208, 123207, 123376, 123375, 123544, 123543, 123712, 123711, 123880, 123879, 124048, 124047, 124216, 124215, 124384, 124383, 124552, 124551, 124720, 124719, 124888, 124887, 125056, 125055, 125224, 125223, 125392, 125391, 125560, 125559, 125728, 125727, 125896, 125895, 126064, 126063, 126232, 126231, 126400, 126399, 126568, 126567, 126736, 126735, 126904, 126903, 127072, 127071, 127240, 127239, 127408, 127407, 127576, 127575, 127744, 127743, 127912, 127911, 128080, 128079, 128248, 128247, 128416, 128415, 128584, 128583, 128752, 128751, 128920, 128919, 129088, 129087, 129256, 129255, 129424, 129423, 129592, 129591, 129760, 129759, 129928, 129927, 130096, 130095, 130264, 130263, 130432, 130431, 130600, 130599, 130768, 130767, 130936, 130935, 131104, 131103, 131272, 131271, 131440, 131439, 131608, 131607, 131776, 131775, 131944, 131943, 132112, 132111, 132280, 132279, 132448, 132447, 132616, 132615, 132784, 132783, 132952, 132951, 133120, 133119, 133288, 133287, 133456, 133455, 133624, 133623, 133792, 133791, 133960, 133959, 134128, 134127, 134296, 134295, 134464, 134463, 134632, 134631, 134800, 134799, 134968, 134967, 135136, 135135, 135304, 135303, 135472, 135471, 135640, 135639, 135808, 135807, 135976, 135975, 136144, 136143, 136312, 136311, 136480, 136479, 136648, 136647, 136816, 136815, 136984, 136983, 137152, 137151, 137320, 137319, 137488, 137487, 137656, 137655, 137824, 137823, 137992, 137991, 138160, 138159, 138328, 138327, 138496, 138495, 138664, 138663, 138832, 138831, 139000, 138999, 139168, 139167, 139336, 139335, 139504, 139503, 139672, 139671, 139840, 139839, 140008, 140007, 140176, 140175, 140344, 140343, 140512, 140511, 140680, 140679, 140848, 140847, 141016, 141015, 141184, 141183, 141352, 141351, 141520, 141519, 141688, 141687, 141856, 141855, 142024, 142023, 142192, 142191, 142360, 142359, 142528, 142527, 142696, 142695, 142864, 142863, 143032, 143031, 143200, 143199, 143368, 143367, 143536, 143535, 143704, 143703, 143872, 143871, 144040, 144039, 144208, 144207, 144376, 144375, 144544, 144543, 144712, 144711, 144880, 144879, 145048, 145047, 145216, 145215, 145384, 145383, 145552, 145551, 145720, 145719, 145888, 145887, 146056, 146055, 146224, 146223, 146392, 146391, 146560, 146559, 146728, 146727, 146896, 146895, 147064, 147063, 147232, 147231, 147400, 147399, 147568, 147567, 147736, 147735, 147904, 147903, 148072, 148071, 148240, 148239, 148408, 148407, 148576, 148575, 148744, 148743, 148912, 148911, 149080, 149079, 149248, 149247, 149416, 149415, 149584, 149583, 149752, 149751, 149920, 149919, 150088, 150087, 150256, 150255, 150424, 150423, 150592, 150591, 150760, 150759, 150928, 150927, 151096, 151095, 151264, 151263, 151432, 151431, 151600, 151599, 151768, 151767, 151936, 151935, 152104, 152103, 152272, 152271, 152440, 152439, 152608, 152607, 152776, 152775, 152944, 152943, 153112, 153111, 153280, 153279, 153448, 153447, 153616, 153615, 153784, 153783, 153952, 153951, 154120, 154119, 154288, 154287, 154456, 154455, 154