# A013384 (b-file synthesized from sequence entry)
0 1
1 -15
2 271
3 -7655
4 284491
5 -9609795
6 -382526689
7 229639178065
8 -65098408980269
9 17837435546853925
10 -5217817960366272249
11 1673172596073749841785
12 -591805818675678286322629