# A057170 (b-file synthesized from sequence entry)
0 1
1 2
2 12
3 288
4 26880
5 10035200
6 14836039680
7 87734404251648
8 2064716402685640704
9 194361783607326689722368
10 72958995691997968023051829248
11 109548594452892660460226753134067712
12 656593430123179564638165745256190909087744
13 15741504841171021653720624575980053578961033101312