n | a(n) |
---|---|
1 | 1 |
2 | 1 |
3 | 3 |
4 | 8 |
5 | 60 |
6 | 180 |
7 | 2520 |
8 | 10080 |
9 | 120960 |
10 | 907200 |
11 | 19958400 |
12 | 79833600 |
13 | 3113510400 |
14 | 21794572800 |
15 | 326918592000 |
16 | 4184557977600 |
17 | 177843714048000 |
18 | 1067062284288000 |
19 | 60822550204416000 |
20 | 405483668029440000 |
[1,1,3,8,60,180,2520,10080,120960,907200,19958400, 79833600,3113510400,21794572800,326918592000, 4184557977600,177843714048000,1067062284288000, 60822550204416000,405483668029440000] |