# A009798 (b-file synthesized from sequence entry)
0 1
1 -6
2 112
3 -5488
4 451840
5 -57057792
6 10262228992
7 -2484525168640
8 779280513040384
9 -307370299649556480
10 148889329569589362688
11 -86890528715348714192896
12 60129120979379216762011648