# A366752 (b-file synthesized from sequence entry)
0 0
1 0
2 0
3 6
4 12
5 40
6 540
7 3528
8 25200
9 324000
10 3648960
11 41690880
12 622274400
13 9573033600
14 150465579264
15 2705877820800
16 51819600268800
17 1028013655818240
18 22086154437442560
19 504188626820659200
20 11997041025160396800
21 301999960230701322240