# A013403 (b-file synthesized from sequence entry)
0 -1
1 -7
2 -47
3 3369
4 571573
5 88260053
6 16352313521
7 3805010266353
8 1114309660688557
9 405568733333445837
10 180263147441643275337
11 96121395297143070311401
12 60524878000846286453504453