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1, 3, 13, 57, 259, 1177, 5367, 24473, 111631, 509193, 2322703, 10595097, 48330079, 220460137, 1005640527, 4587282233, 20925130111, 95451085833, 435405168943, 1986123672537, 9059808024799, 41326792777897, 188514347839887, 859918153641593, 3922562072528191, 17892974055353673
(列表;图表;参考;听;历史;文本;内部格式)
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