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1, 2, 1, 3, 6, 12, 24, 43, 68, 159, 318, 631, 1244, 2444, 4638, 8350, 13306, 31249, 62498, 124991, 249964, 499884, 999518, 1998110, 3992826, 7976984, 15904776, 31622086, 62494618, 121995928, 232079906, 417569970, 665554652, 1563189209, 3126378418, 6252756831, 12505513644
(列表;图表;参考;听;历史;文本;内部格式)
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