|
4, 0, 2, 7, 24, 84, 300, 1089, 4004, 14872, 55692, 209950, 795872, 3031032, 11589240, 44462565, 171085500, 660009840, 2551955340, 9887121090, 38374857840, 149184555000, 580807904040, 2264193450090, 8837215647624, 34529741789904, 135054066707000
(列表;图表;参考;听;历史;文本;内部格式)
|
|