# A098606 (b-file synthesized from sequence entry)
0 0
1 1
2 76
3 7032
4 889920
5 151876800
6 33953713920
7 9671337446400
8 3426840152064000
9 1480226878835712000
10 766252171508060160000
11 468506511112577236992000
12 334155981137427201392640000