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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 2 |
| 3 | 6 |
| 4 | 12 |
| 5 | 60 |
| 6 | 180 |
| 7 | 1260 |
| 8 | 5040 |
| 9 | 15120 |
| 10 | 75600 |
| 11 | 831600 |
| 12 | 3326400 |
| 13 | 43243200 |
| 14 | 302702400 |
| 15 | 1513512000 |
| 16 | 6054048000 |
| 17 | 102918816000 |
| 18 | 617512896000 |
| 19 | 11732745024000 |
| 20 | 58663725120000 |
| 21 | 410646075840000 |
| 22 | 4517106834240000 |
| 23 | 103893457187520000 |
| 24 | 623360743125120000 |
[1,2,6,12,60,180,1260,5040,15120,75600,831600, 3326400,43243200,302702400,1513512000,6054048000, 102918816000,617512896000,11732745024000, 58663725120000,410646075840000,4517106834240000, 103893457187520000,623360743125120000] |