|
0, 0, 2, 6, 16, 44, 128, 440, 1706, 6496, 24576, 90004, 327680, 1198336, 4438966, 16645120, 62914560, 238602228, 905969664, 3442672434, 13102206738, 49977802752, 191126044672, 732649663000, 2814062572336, 10825959342080, 41705086880768, 160862475536676
(列表;图表;参考;听;历史;文本;内部格式)
|
|