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2, 10, 104, 420, 3786, 14826, 131264, 510576, 4508580, 17523506, 154773696, 602175444, 5323519838, 20744201142, 183586707648, 716553432640, 6348284151024, 24816637181076, 220081449149440, 861581808936200, 7647723960962932, 29978812970646870, 266322435212031984
(列表;图表;参考;听;历史;文本;内部格式)
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