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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 2 |
| 3 | 3 |
| 4 | 4 |
| 5 | 6 |
| 6 | 12 |
| 7 | 211050 |
| 8 | 3848880 |
| 9 | 20333040 |
| 10 | 125038830 |
| 11 | 2978699430 |
[1,2,3,4,6,12,211050,3848880,20333040,125038830, 2978699430] |