n | a(n) |
---|---|
1 | 1 |
2 | 4 |
3 | 36 |
4 | 144 |
5 | 3600 |
6 | 10800 |
7 | 529200 |
8 | 2116800 |
9 | 6350400 |
10 | 6350400 |
11 | 768398400 |
12 | 768398400 |
13 | 129859329600 |
14 | 129859329600 |
15 | 129859329600 |
16 | 519437318400 |
17 | 150117385017600 |
18 | 450352155052800 |
19 | 162577127974060800 |
20 | 6503085118962432 |
[1,4,36,144,3600,10800,529200,2116800,6350400, 6350400,768398400,768398400,129859329600, 129859329600,129859329600,519437318400, 150117385017600,450352155052800, 162577127974060800,6503085118962432] |