# A114574 (b-file synthesized from sequence entry)
1 4
2 18
3 600
4 35280
5 439084800
6 80951270400
7 6046686277632000
8 2311256907767808000
9 594596384994354462720000
10 256411097818451356681764864000000
11 254907998279515607349492449280000000
12 509258864375374766713691244518493388800000000
13 1371553591139716091434972544191070818271232000000000