| 数据
|
1, 1, 3, 10, 34, 126, 491, 1949, 7919, 32903, 138223, 587746, 2526421, 10941149, 47729602, 209562569, 924878572, 4101835581, 18270356562, 81686164214, 366493225290, 1649478891641, 7444911031185, 33690982426856, 152831005271410, 694817195153960, 3165364902881297, 14447917905401121
|