# A177392 (b-file synthesized from sequence entry)
0 1
1 4
2 72
3 4624
4 683300
5 178979256
6 72215891104
7 41253720775296
8 31544658525648240
9 31017951980440480000
10 38057564566180231623056
11 56911365875990047904578944
12 101785693668820682351404925728