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| n | a(n) |
|---|---|
| 1 | 3 |
| 2 | 81 |
| 3 | 6166 |
| 4 | 738482 |
| 5 | 111026387 |
| 6 | 18986502099 |
| 7 | 3529435151262 |
| 8 | 698068937559304 |
[3,81,6166,738482,111026387,18986502099, 3529435151262,698068937559304] |