# A012228 (b-file synthesized from sequence entry)
0 1
1 -2
2 24
3 -944
4 77952
5 -10623744
6 2145104896
7 -602082207744
8 224357319278592
9 -107165894175948800
10 63836869263529082880
11 -46390243522547859062784
12 40392288941602607862906880