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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 2 |
| 2 | 12 |
| 3 | 12 |
| 4 | 120 |
| 5 | 120 |
| 6 | 2520 |
| 7 | 2520 |
| 8 | 5040 |
| 9 | 5040 |
| 10 | 55440 |
| 11 | 55440 |
| 12 | 720720 |
| 13 | 720720 |
| 14 | 720720 |
| 15 | 720720 |
| 16 | 24504480 |
| 17 | 24504480 |
| 18 | 1396755360 |
| 19 | 1396755360 |
| 20 | 6983776800 |
| 21 | 6983776800 |
| 22 | 160626866400 |
| 23 | 160626866400 |
| 24 | 160626866400 |
| 25 | 160626866400 |
| 26 | 160626866400 |
| 27 | 160626866400 |
[1,2,12,12,120,120,2520,2520,5040,5040,55440, 55440,720720,720720,720720,720720,24504480, 24504480,1396755360,1396755360,6983776800, 6983776800,160626866400,160626866400,160626866400, 160626866400,160626866400,160626866400] |