# A012080 (b-file synthesized from sequence entry)
0 1
1 4
2 76
3 3424
4 285136
5 38302144
6 7603381696
7 2097552753664
8 768471264000256
9 361133162545705984
10 211820037816772258816
11 151696192774576615727104
12 130270853179191716758245376