n | a(n) |
---|---|
2 | 1 |
3 | 3 |
4 | 8 |
5 | 25 |
6 | 108 |
7 | 735 |
8 | 4608 |
9 | 40824 |
10 | 362000 |
11 | 3628185 |
12 | 40766976 |
13 | 478988081 |
14 | 6227101888 |
15 | 87146087625 |
16 | 1300561920000 |
17 | 20922788404479 |
18 | 355737629952000 |
19 | 6402373698206889 |
20 | 121810906419200000 |
21 | 2432822933484213543 |
22 | 51090942172652090368 |
23 | 1124000727778962143055 |
[1,3,8,25,108,735,4608,40824,362000,3628185, 40766976,478988081,6227101888,87146087625, 1300561920000,20922788404479,355737629952000, 6402373698206889,121810906419200000, 2432822933484213543,51090942172652090368, 1124000727778962143055] |