# A009217 (b-file synthesized from sequence entry)
0 1
1 2
2 4
3 -88
4 -1136
5 46112
6 1098304
7 -103251328
8 -1963486976
9 585781985792
10 -5685626878976
11 -6083058037577728
12 447306486332821504
13 87514624808197824512
14 -19369074730552627675136