# A009710 (b-file synthesized from sequence entry)
0 0
1 2
2 16
3 512
4 34816
5 3821312
6 618121216
7 138682959872
8 41171702972416
9 15610723195092992
10 7357121913006063616
11 4217775794187229724672
12 2889975739296119171055616
13 2332177121915783600628826112