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1, 1, -2, 4, -8, 16, -32, 64, -127, 246, -456, 792, -1254, 1716, -1716, 1, 6418, -24156, 67080, -162924, 364608, -767976, 1535953, -2922702, 5273624, -8934120, 13904190, -18874260, 18874260, 1, -71705866, 272491892, -763189064, 1865459352, -4190875872
(列表;图表;参考;听;历史;文本;内部格式)
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