|
1, 4, 14, 48, 165, 572, 2001, 7056, 25042, 89320, 319793, 1148184, 4131009, 14885468, 53697270, 193862592, 700312381, 2530902676, 9149426897, 33083393640, 119645675898, 432748165304, 1565346866889, 5662560013488, 20484930829825, 74108882866612, 268111981441886
(列表;图表;参考;听;历史;文本;内部格式)
|
|