| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 2 |
| 3 | 6 |
| 4 | 12 |
| 5 | 60 |
| 6 | 540 |
| 7 | 3780 |
| 8 | 7560 |
| 9 | 2520 |
| 10 | 2520 |
| 11 | 27720 |
| 12 | 27720 |
| 13 | 360360 |
| 14 | 360360 |
| 15 | 360360 |
| 16 | 720720 |
| 17 | 12252240 |
| 18 | 110270160 |
| 19 | 2095133040 |
| 20 | 10475665200 |
| 21 | 1496523600 |
| 22 | 1496523600 |
| 23 | 34420042800 |
| 24 | 34420042800 |
| 25 | 34420042800 |
| 26 | 34420042800 |
[1,2,6,12,60,540,3780,7560,2520,2520,27720,27720, 360360,360360,360360,720720,12252240,110270160, 2095133040,10475665200,1496523600,1496523600, 34420042800,34420042800,34420042800,34420042800] |