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| n | a(n) |
|---|---|
| 1 | 3 |
| 2 | 4 |
| 3 | 6 |
| 4 | 12 |
| 5 | 60 |
| 6 | 1020 |
| 7 | 262140 |
| 8 | 334495740 |
| 9 | 17179869180 |
| 10 | 27971850688528380 |
[3,4,6,12,60,1020,262140,334495740,17179869180, 27971850688528380] |