n | a(n) |
---|---|
1 | 1 |
2 | 2 |
3 | 3 |
4 | 12 |
5 | 30 |
6 | 180 |
7 | 395780 |
8 | 56 |
9 | 5339880 |
10 | 18448242120 |
11 | 1192281609186360 |
12 | 180180 |
13 | 393869810468558572779517216129800 |
14 | 2914872400440 |
15 | 2914872400440 |
16 | 180026486640 |
17 | 4193048661254917704240 |
18 | 2640766128 |
19 | 11832093494672880 |
[1,2,3,12,30,180,395780,56,5339880,18448242120, 1192281609186360,180180, 393869810468558572779517216129800,2914872400440, 2914872400440,180026486640,4193048661254917704240, 2640766128,11832093494672880] |