# A036687 (b-file synthesized from sequence entry)
0 1
1 12
2 420
3 35280
4 6486480
5 2473511040
6 1888413246720
7 2815188363187200
8 8043859365429888000
9 43422645527382401280000
10 437806134821131674998400000
11 8167684917019434265210752000000
12 279763767797866931083907001600000000
13 17478686582471797472931336490014720000000