# A012485 (b-file synthesized from sequence entry)
0 1
1 -1
2 9
3 -105
4 1393
5 -71025
6 -898887
7 -455252889
8 -75822681503
9 -21366754787169
10 -7036035942040855
11 -2891117170991668553
12 -1426147181806835610927
13 -835104626729810211267025