# A013355 (b-file synthesized from sequence entry)
0 1
1 0
2 0
3 -90
4 -2520
5 -126630
6 -7232940
7 -525494970
8 -41497943760
9 -2901128941710
10 81569169583020
11 147991203194615550
12 70007476191566027400
13 29824424882002116303210