# A086591 (b-file synthesized from sequence entry)
0 1
1 1
2 1
3 1
4 2
5 6
6 24
7 2520
8 18378360
9 6906955255200
10 5987137029832314231356979603166508647200
11 1000156941827668764767034398758639477404906113721462819980559968765060862592344000