# A119936 (b-file synthesized from sequence entry)
1 1
2 8
3 108
4 576
5 18000
6 21600
7 1234800
8 5644800
9 57153600
10 63504000
11 8452382400
12 9220780800
13 1688171284800
14 1818030614400
15 1947889944000
16 8310997094400
17 2551995545299200
18 2702112930316800
19 1029655143835718400