# A281259 (b-file synthesized from sequence entry)
1 0
2 0
3 0
4 0
5 0
6 0
7 0
8 1080
9 12960
10 143424
11 1641600
12 19915200
13 257644800
14 3556224000
15 52289556480
16 817133184000
17 13536585216000
18 237105792000000
19 4380335511552000
20 85148431867699200
21 1737742314147840000
22 37156364106301440000
23 830772012055265280000