# A012067 (b-file synthesized from sequence entry)
0 1
1 -1
2 -7
3 -169
4 -8751
5 -789681
6 -110381943
7 -22142611737
8 -6041067843807
9 -2153812782224097
10 -972958293249140583
11 -543350342541113761545
12 -367659108914973687690255
13 -296447255926407313341954705