# A012484 (b-file synthesized from sequence entry)
0 1
1 -4
2 68
3 -3064
4 265936
5 -35730176
6 7235106240
7 -1984468240000
8 725871298851072
9 -336136505074527232
10 194162507080835314688
11 -135973687998348753147904
12 113975638131557424617639936