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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 2 |
| 3 | 6 |
| 4 | 12 |
| 5 | 60 |
| 6 | 120 |
| 7 | 840 |
| 8 | 7560 |
| 9 | 15120 |
| 10 | 110880 |
| 11 | 166320 |
| 12 | 1441440 |
| 13 | 2882880 |
| 14 | 10810800 |
| 15 | 43243200 |
| 16 | 183783600 |
| 17 | 367567200 |
| 18 | 2793510720 |
| 19 | 6983776800 |
| 20 | 58663725120 |
| 21 | 117327450240 |
| 22 | 299836817280 |
| 23 | 2698531355520 |
| 24 | 7495920432000 |
[1,2,6,12,60,120,840,7560,15120,110880,166320, 1441440,2882880,10810800,43243200,183783600, 367567200,2793510720,6983776800,58663725120, 117327450240,299836817280,2698531355520, 7495920432000] |