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1, 1, 2, 2, 3, 8, 33, 183, 1136, 5506, 24282, 117926, 569254, 2774987, 13031733, 58087202, 261738519, 1186540784, 5337900539, 23545839048, 102301482654, 442231758905, 1901120041905, 8113101102305, 34276506444563, 143502353379187
(列表;图表;参考;听;历史;文本;内部格式)
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