n | a(n) |
---|---|
0 | 1 |
1 | 3 |
2 | 30 |
3 | 630 |
4 | 22680 |
5 | 1247400 |
6 | 97297200 |
7 | 10216206000 |
8 | 1389404016000 |
9 | 237588086736000 |
10 | 49893498214560000 |
11 | 12623055048283680000 |
12 | 3786916514485104000000 |
13 | 1329207696584271504000000 |
14 | 539658324813214230624000000 |
15 | 250941121038144617240160000000 |
16 | 132496911908140357902804480000000 |
[1,3,30,630,22680,1247400,97297200,10216206000, 1389404016000,237588086736000,49893498214560000, 12623055048283680000,3786916514485104000000, 1329207696584271504000000, 539658324813214230624000000, 250941121038144617240160000000, 132496911908140357902804480000000] |