# A015507 (b-file synthesized from sequence entry)
1 1
2 1
3 8
4 352
5 91520
6 142405120
7 1328924579840
8 74403829376081920
9 24994031979330942894080
10 50376471215620688640734003200
11 609214555257707874214915513922355200
12 44204249911340791820804231319883906967142400