|
1, 1, 2, 3, 12, 20, 120, 210, 1680, 3024, 30240, 55440, 665280, 1235520, 17297280, 32432400, 518918400, 980179200, 17643225600, 33522128640, 670442572800, 1279935820800, 28158588057600, 53970627110400, 1295295050649600, 2490952020480000, 64764752532480000
(列表;图表;参考;听;历史;文本;内部格式)
|
|