# A100740 (b-file synthesized from sequence entry)
0 1
1 6
2 48
3 288
4 2400
5 14400
6 115200
7 691200
8 5764800
9 34588800
10 276710400
11 1660262400
12 13835520000
13 83013120000
14 664104960000
15 3984629760000
16 33232930569600
17 199397583417600
18 1595180667340800
19 9571084004044800