# A012239 (b-file synthesized from sequence entry)
0 1
1 -1
2 5
3 -109
4 2729
5 -196281
6 9832173
7 -1827291621
8 102520239057
9 -58512018759921
10 -121510420621227
11 -5298654687807230685
12 -895543588646311726215
13 -1180050438628226991259305