\ud835\udc4e\ud835\udc5b \ud835\udc4e\ud835\udc5b \ud835\udc4e1, \ud835\udc4e2, \ud835\udc4e3,\ud835\udc4e4 \ud835\udc4e\ud835\udc5b = (\u22121)\ud835\udc5b+1 2\ud835\udc5b\u22121 \ud835\udc4e1 = (\u22121)2 2 \u2212 1 = 1 \ud835\udc4e2 = (\u22121)3 4 \u2212 1 = \u2212 1 3 \ud835\udc4e3 = (\u22121)4 \ud835\udf03 \u2212 1 = 1 5 \ud835\udc4e4 = (\u22121)5 8 \u2212 1 = \u2212 1 7
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