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0, 1, 8, 58, 408, 2859, 20016, 140116, 980816, 6865717, 48060024, 336420174, 2354941224, 16484588575, 115392120032, 807744840232, 5654213881632, 39579497171433, 277056480200040, 1939395361400290, 13575767529802040, 95030372708614291, 665212608960300048, 4656488262722100348, 32595417839054702448
(列表;图表;参考;听;历史;文本;内部格式)
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