# A012023 (b-file synthesized from sequence entry)
0 1
1 -1
2 13
3 -421
4 25369
5 -2449801
6 346065061
7 -67243537453
8 17192488230961
9 -5593309059948049
10 2255588021494237501
11 -1103994926592923677621
12 644587811150505183179593
13 -442516027690815793746696601