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1, 32, 528, 6016, 53384, 393920, 2517824, 14329600, 74059812, 352722720, 1565583648, 6533812352, 25823152256, 97218393280, 350348856704, 1213526698240, 4054279504266, 13103911398400, 41081428394096, 125210147216000, 371754750363712, 1077136199182976, 3050503922469440
(列表;图表;参考;听;历史;文本;内部格式)
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