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0, 1, 1, 0, 2, 2, 3, 4, 7, 9, 14, 20, 30, 43, 64, 93, 137, 200, 294, 430, 631, 924, 1355, 1985, 2910, 4264, 6250, 9159, 13424, 19673, 28833, 42256, 61930, 90762, 133019, 194948, 285711, 418729, 613678, 899388, 1318118, 1931795, 2831184, 4149301, 6081097, 8912280, 13061582, 19142678, 28054959
(列表;图表;参考;听;历史;文本;内部格式)
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