# A012102 (b-file synthesized from sequence entry)
0 1
1 0
2 4
3 192
4 9616
5 1115392
6 172350528
7 37703053312
8 10989042954496
9 4099556761067520
10 1910734175200936960
11 1087150572502335373312
12 741705342559787764715520
13 597689034047543849712812032