# A119941 (b-file synthesized from sequence entry)
3 5
4 27
5 756
6 800
7 40500
8 165375
9 1509200
10 1524096
11 185749200
12 186763500
13 31696434000
14 31802284800
15 31887679824
16 127830277575
17 37009908936000
18 37066020992000
19 13397976612820800
20 13412613057860016
21 13425208791508800