# A012169 (b-file synthesized from sequence entry)
0 1
1 -1
2 1
3 -1
4 449
5 -31681
6 3077185
7 -445157441
8 87981830785
9 -22627780368001
10 7353703042163585
11 -2948527179059299201
12 1429774747400938052161
13 -824792570907860638058561
14 558247886671770078618138049