# A012645 (b-file synthesized from sequence entry)
0 1
1 -1
2 21
3 -765
4 53193
5 -6008025
6 993328413
7 -226691205013
8 68261145008657
9 -26216583047151921
10 12507068079360896165
11 -7255577391165958142893
12 5029681350011635244424921
13 -4106028806747521109741788425