# A171485 (b-file synthesized from sequence entry)
0 2
1 10
2 1168
3 624240
4 114051456
5 353810160000
6 9271076400000
7 86580328116240000
8 19402654331894400000
9 15000926812307614080000
10 437120128035736887168000
11 17196604114594832318160000000