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1, 2, 9, 35, 136, 531, 2071, 8078, 31509, 122903, 479392, 1869903, 7293691, 28449566, 110969577, 432844811, 1688342296, 6585500475, 25687217935, 100194839822, 390817174221, 1524410477999, 5946072636304, 23193083691351, 90466289938963, 352870266163550
(列表;图表;参考;听;历史;文本;内部格式)
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