# A009505 (b-file synthesized from sequence entry)
0 1
1 -2
2 -8
3 -184
4 -5568
5 -231552
6 -11751296
7 -596164352
8 -4342886400
9 10035384119296
10 3825733461393408
11 1266087931055144960
12 431690972162311487488
13 158346541732411570847744
14 63296242766270753646313472