# A012066 (b-file synthesized from sequence entry)
0 1
1 0
2 12
3 248
4 21648
5 2241088
6 390536000
7 91111189120
8 28811937609984
9 11657540060256256
10 5912796798580972544
11 3665610214092467574784
12 2729315998404117133692928
13 2402622277659457905178820608