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0, 4, 1, 8, 12, 31, 117, 263, 689, 1977, 5034, 13497, 36675, 96801, 258990, 694840, 1851440, 4950051, 13241884, 35365083, 94528266, 252701451, 675271071, 1804830952, 4824041591, 12892622434, 34458237926, 92097864532, 246147029176
(列表;图表;参考文献;听;历史;文本;内部格式)
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