# A181142 (b-file synthesized from sequence entry)
1 2
2 12
3 336
4 17760
5 1543680
6 199019520
7 35611269120
8 8437755432960
9 2556188496691200
10 963558923688345600
11 442230750973683302400
12 242766600433441859174400
13 157060798435284559803187200