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0, 1, 10, 86, 756, 7092, 71856, 787824, 9329760, 118956960, 1627067520, 23786386560, 370371536640, 6122231942400, 107109431654400, 1977781262284800, 38445562145894400, 784885857270681600, 16792523049093120000, 375755553108633600000, 8777531590107033600000
(列表;图表;参考;听;历史;文本;内部格式)
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