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| n | a(n) |
|---|---|
| 1 | 2 |
| 2 | 3 |
| 3 | 6 |
| 4 | 4 |
| 5 | 12 |
| 6 | 72 |
| 7 | 5 |
| 8 | 20 |
| 9 | 240 |
| 10 | 17280 |
| 11 | 7 |
| 12 | 35 |
| 13 | 700 |
| 14 | 168000 |
| 15 | 2903040000 |
| 16 | 8 |
| 17 | 56 |
| 18 | 1960 |
| 19 | 1372000 |
| 20 | 230496000000 |
| 21 | 669139107840000000000 |
| 22 | 10 |
| 23 | 80 |
| 24 | 4480 |
| 25 | 8780800 |
| 26 | 12047257600000 |
| 27 | 2776844687769600000000000 |
| 28 | 1858095376984393503473664000000000000000000000 |
[2,3,6,4,12,72,5,20,240,17280,7,35,700,168000, 2903040000,8,56,1960,1372000,230496000000, 669139107840000000000,10,80,4480,8780800, 12047257600000,2776844687769600000000000, 1858095376984393503473664000000000000000000000] |