n | a(n) |
---|---|
1 | 1 |
2 | 4 |
3 | 36 |
4 | 144 |
5 | 3600 |
6 | 1200 |
7 | 58800 |
8 | 235200 |
9 | 6350400 |
10 | 6350400 |
11 | 768398400 |
12 | 768398400 |
13 | 129859329600 |
14 | 129859329600 |
15 | 129859329600 |
16 | 519437318400 |
17 | 150117385017600 |
18 | 50039128339200 |
19 | 18064125330451200 |
20 | 3612825066090240 |
21 | 3612825066090240 |
22 | 3612825066090240 |
23 | 1911184459961736960 |
[1,4,36,144,3600,1200,58800,235200,6350400, 6350400,768398400,768398400,129859329600, 129859329600,129859329600,519437318400, 150117385017600,50039128339200,18064125330451200, 3612825066090240,3612825066090240, 3612825066090240,1911184459961736960] |