# A169971 (b-file synthesized from sequence entry)
0 1
1 6
2 8
3 180
4 32
5 10080
6 3456
7 453600
8 115200
9 47900160
10 71680
11 217945728000
12 36578304000
13 2241727488000
14 45984153600
15 2000741783040000