# A012461 (b-file synthesized from sequence entry)
0 0
1 2
2 -16
3 488
4 -30336
5 3061152
6 -450481920
7 90676698240
8 -23889578496000
9 7972943138664960
10 -3286129765438771200
11 1638857583672607549440
12 -972524875970827007262720
13 677113960144029088030433280