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1, 0, 2, 3, 6, 14, 31, 68, 150, 331, 730, 1610, 3551, 7832, 17274, 38099, 84030, 185334, 408767, 901564, 1988462, 4385691, 9672946, 21334354, 47054399, 103781744, 228897842, 504850083, 1113481910, 2455861662, 5416573407, 11946628724, 26349119110, 58114811627
(列表;图表;参考;听;历史;文本;内部格式)
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