# A292784 (b-file synthesized from sequence entry)
0 1
1 1
2 12
3 405
4 26880
5 2953125
6 484989120
7 111289483305
8 34007836262400
9 13350287284158825
10 6547290750000000000
11 3922838769902739011325
12 2819575386162274605465600
13 2394486245934541921935898125
14 2371947271643716575046318080000
15 2710687260280640086154937744140625
16 3539907755812512418187309922385920000