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| n | a(n) |
|---|---|
| 1 | 3 |
| 2 | 35 |
| 3 | 2076 |
| 4 | 489294 |
| 5 | 529329240 |
| 6 | 2543460828164 |
| 7 | 55588636099730695 |
| 8 | 5525569263450576586033 |
[3,35,2076,489294,529329240,2543460828164, 55588636099730695,5525569263450576586033] |