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0, 0, 1, 2, 5, 10, 22, 44, 91, 182, 370, 740, 1490, 2980, 5980, 11960, 23957, 47914, 95902, 191804, 383750, 767500, 1535284, 3070568, 6141694, 12283388, 24567892, 49135784, 98273780, 196547560, 393099544, 786199088, 1572406987, 3144813974
(列表;图表;参考;听;历史;文本;内部格式)
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