# A012620 (b-file synthesized from sequence entry)
0 1
1 0
2 12
3 120
4 15120
5 640320
6 143136576
7 14091272832
8 5105629251840
9 906008454739968
10 490783256100396032
11 136461255865204086784
12 104233836908816608661504
13 41544908070600747941806080