n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 2 |
3 | 6 |
4 | 6 |
5 | 30 |
6 | 180 |
7 | 1260 |
8 | 1260 |
9 | 1260 |
10 | 12600 |
11 | 138600 |
12 | 138600 |
13 | 1801800 |
14 | 25225200 |
15 | 378378000 |
16 | 378378000 |
17 | 6432426000 |
18 | 6432426000 |
19 | 122216094000 |
20 | 122216094000 |
21 | 2566537974000 |
22 | 56463835428000 |
23 | 1298668214844000 |
24 | 1298668214844000 |
25 | 1298668214844000 |
26 | 33765373585944000 |
[1,1,2,6,6,30,180,1260,1260,1260,12600,138600, 138600,1801800,25225200,378378000,378378000, 6432426000,6432426000,122216094000,122216094000, 2566537974000,56463835428000,1298668214844000, 1298668214844000,1298668214844000, 33765373585944000] |