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1, 1, 2, 5, 13, 36, 102, 295, 864, 2557, 7624, 22868, 68920, 208527, 632987, 1926752, 5878738, 17973523, 55050690, 168881464, 518818523, 1595878573, 4914522147, 15150038699, 46747391412, 144370209690, 446214862158, 1380161749537, 4271808447154, 13230257155092, 40999697820032
(列表;图表;参考;听;历史;文本;内部格式)
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