# A012489 (b-file synthesized from sequence entry)
0 1
1 0
2 -12
3 -168
4 8144
5 1384768
6 149032128
7 16299168896
8 2859883876608
9 1008997773326336
10 466978134769624064
11 228641400872390260736
12 120327829272472868704256
13 72933308761894955432460288