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1, 2, 5, 16, 46, 128, 366, 1048, 2983, 8498, 24235, 69088, 196924, 561360, 1600252, 4561680, 13003565, 37068242, 105667377, 301217072, 858654442, 2447694896, 6977439850, 19890006440, 56698785235, 161626505250, 460735217111, 1313379512256, 3743941595128, 10672542499296
(列表;图表;参考;听;历史;文本;内部格式)
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