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1, 1, 1, 6, 72, 720, 1080, 25200, 40320, 725760, 25401600, 558835200, 23950080000, 1120863744000, 1961511552000, 58845346560000, 3452260331520000, 4108189794508800000, 7394741630115840000, 521857480753889280000, 948831783188889600000, 39850934893933363200000, 3287702128749502464000000
(列表;图表;参考文献;听;历史;文本;内部格式)
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