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1, 6, 40, 5040, 24192, 39916800, 6227020800, 37362124800, 355687428096000, 24329020081766400, 51090942171709440000, 2872446304320552960000, 5170403347776995328000000, 2177773890083670432153600000, 8841761993739701954543616000000, 249176928914482509628047360000000
(列表;图表;参考;听;历史;文本;内部格式)
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