# A012442 (b-file synthesized from sequence entry)
0 1
1 0
2 12
3 -120
4 17808
5 -962880
6 219945792
7 -31053369984
8 10719320103168
9 -2908608708409344
10 1441051026777725952
11 -637493975166202091520
12 433239709928964325478400
13 -282573293205848764594176000