|
1, 1, 1, 4, 6, 12, 40, 240, 480, 1920, 6912, 20736, 76032, 253440, 608256, 4257792, 7983360, 26611200, 88704000, 319334400, 1277337600, 5109350400, 19508428800, 73156608000, 336520396800, 1177821388800, 6281714073600, 23332080844800, 66663088128000
(列表;图表;参考;听;历史;文本;内部格式)
|
|