# A098137 (b-file synthesized from sequence entry)
1 2
2 12
3 270
4 16640
5 48831250
6 13060740672
7 232630514810750
8 144115188092633088
9 8862938119652888516418
10 100000000000000000010000000000
11 191943424957750480504432152962422
12 8505622499821102144576131693030930382848
13 4695452425098908797088971409337724910182721066