# A013452 (b-file synthesized from sequence entry)
0 4
1 0
2 544
3 -17920
4 707584
5 -149360640
6 5242548224
7 -2782416732160
8 166243180478464
9 -109528131284500480
10 13239205658628194304
11 -8328889253838297497600
12 1938205426199431158431744