# A001569 (b-file synthesized from sequence entry)
0 1
1 -1
2 -1
3 2
4 37
5 329
6 1501
7 -31354
8 -1451967
9 -39284461
10 -737652869
11 560823394
12 1103386777549
13 82520245792997
14 4398448305245905
15 168910341581721494
16 998428794798272641
17 -720450682719825322809
18 -105099789680808769094057
19 -10594247095804692725600734