n | a(n) |
---|---|
0 | 1 |
1 | 2 |
2 | 3 |
3 | 12 |
4 | 60 |
5 | 360 |
6 | 252 |
7 | 2016 |
8 | 36288 |
9 | 362880 |
10 | 4989600 |
11 | 11975040 |
12 | 622702080 |
13 | 8717829120 |
14 | 65383718400 |
15 | 5230697472000 |
16 | 2736057139200 |
17 | 49249028505600 |
18 | 30411275102208 |
19 | 608225502044160 |
20 | 25545471085854720000 |
[1,2,3,12,60,360,252,2016,36288,362880,4989600, 11975040,622702080,8717829120,65383718400, 5230697472000,2736057139200,49249028505600, 30411275102208,608225502044160, 25545471085854720000] |