# A012076 (b-file synthesized from sequence entry)
0 1
1 4
2 84
3 4488
4 458448
5 76530048
6 18958160064
7 6533187385728
8 2990371546714368
9 1755799654033628160
10 1286962755283219153920
11 1152156355072706267179008
12 1237421224352190570236497920