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1, 3, 6, 45, 210, 7140, 122265, 242556, 1702935, 8239770, 279909630, 4601330415, 9508687656, 64088265153, 323015470680, 10973017315470, 173166468725253, 372759573255306, 2411897769074475, 12662852473364940, 430164224521152660, 6516946879404850395
(列表;图表;参考;听;历史;文本;内部格式)
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