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2, 11, 29, 80, 261, 789, 2354, 7199, 21889, 66280, 201313, 611401, 1855458, 5632611, 17100277, 51909760, 157581005, 478374029, 1452197426, 4408426199, 13382677305, 40625798040, 123327694601, 374385940001, 1136523495202, 3450144328891
(列表;图表;参考;听;历史;文本;内部格式)
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