# A012833 (b-file synthesized from sequence entry)
0 1
1 -1
2 -3
3 -45
4 2457
5 -36825
6 12566037
7 -1732392389
8 313988548273
9 -92368244011185
10 30231378922437805
11 -12317648529216417629
12 6168347852710380187977
13 -3616136826996686827399305