# A007357 (b-file synthesized from sequence entry)
1 6
2 60
3 90
4 36720
5 12646368
6 22276800
7 126463680
8 4201148160
9 28770487200
10 287704872000
11 1446875426304
12 2548696550400
13 14468754263040
14 590325173932032
15 3291641594841600
16 8854877608980480
17 32916415948416000