# A291331 (b-file synthesized from sequence entry)
0 1
1 2
2 80
3 152064
4 31832735744
5 1278532180456243200
6 15158097871912903189326725120
7 75553979800594222861911290918096439607296
8 213679399657239557797941463213636090471439135194537263104