# A181750 (b-file synthesized from sequence entry)
0 1
1 120
2 291720
3 1085674320
4 4927561419120
5 25071989721176760
6 137401053406474591320
7 793279085081986319145120
8 4760210822189950253433759120
9 29426738284267047709626231969120
10 186257720453050086737999575854359760
11 1201788369927033696254110199515917069120