# A084943 (b-file synthesized from sequence entry)
0 1
1 1
2 10
3 270
4 14040
5 1193400
6 150368400
7 26314470000
8 6104957040000
9 1813172240880000
10 670873729125600000
11 302564051835645600000
12 163384587991248624000000
13 104075982550425373488000000