| 数据
|
1, 1, 4, 31, 377, 6415, 142252, 3919208, 129681162, 5025119715, 223662035160, 11260717242863, 633424125262667, 39405127536106444, 2688050940578533440, 199621706483099855304, 16038639938585081005722, 1386688821351774846453155, 128409360760837836935472512
|