n | a(n) |
---|---|
1 | 4 |
2 | 12 |
3 | 120 |
4 | 1440 |
5 | 24480 |
6 | 482400 |
7 | 11793600 |
8 | 329011200 |
9 | 10567065600 |
10 | 380131315200 |
11 | 15220275840000 |
12 | 669519696384000 |
13 | 32145251314176000 |
14 | 1671451069736448000 |
15 | 93606882905023488000 |
16 | 5616332944630087680000 |
[4,12,120,1440,24480,482400,11793600,329011200, 10567065600,380131315200,15220275840000, 669519696384000,32145251314176000, 1671451069736448000,93606882905023488000, 5616332944630087680000] |