# A074180 (b-file synthesized from sequence entry)
1 1
2 2
3 6
4 12
5 720
6 103680
7 75246796800
8 808868632665784320000
9 654268464910615528694169240757862400000000
10 428067224176493343335784710912347020612738113869041533039507417333760000000000000000