# A323992 (b-file synthesized from sequence entry)
1 13440
2 604800
3 3642240
4 20818560
5 44029440
6 163900800
7 229850880
8 677980800
9 895238400
10 1981324800
11 2184053760
12 5641829760
13 5017447680
14 10343289600
15 11931978240
16 21789747840
17 19152806400
18 40285728000
19 33366117120
20 68201602560
21 62289588480
22 98282419200
23 86675097600
24 183732796800