# A003794 (b-file synthesized from sequence entry)
0 1
1 60
2 20160
3 987033600
4 258492255436800
5 361310134959341568000
6 72736898347485916060188672000
7 78099458182389588115529148326215680000
8 447244452196213365088128369288351077766266880000