# A000479 (b-file synthesized from sequence entry)
0 1
1 1
2 1
3 2
4 24
5 1344
6 1128960
7 12198297600
8 2697818265354240
9 15224734061278915461120
10 2750892211809148994633229926400
11 19464657391668924966616671344752852992000