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| n | a(n) |
|---|---|
| 1 | 3 |
| 2 | 9 |
| 3 | 266 |
| 4 | 74642 |
| 5 | 6288741128 |
| 6 | 1572594649475039115555 |
| 7 | 2940479207648055248739921060463019954825731 |
| 8 | 636481869505123908911789042128815559802233729083976636088659946125592658190514845301447 |
[3,9,266,74642,6288741128,1572594649475039115555, 2940479207648055248739921060463019954825731, 63648186950512390891178904212881555980223372908397\ 6636088659946125592658190514845301447] |