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1, -2, 6, -14, 36, -88, 220, -544, 1352, -3352, 8320, -20640, 51216, -127072, 315296, -782304, 1941056, -4816128, 11949760, -29649664, 73566592, -182532992, 452899840, -1123732480, 2788198656, -6918062592, 17165057536, -42589842944, 105673675776, -262196922368
(列表;图表;参考;听;历史;文本;内部格式)
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