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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 3 |
| 2 | 11 |
| 3 | 59 |
| 4 | 419 |
| 5 | 4619 |
| 6 | 60059 |
| 7 | 1021019 |
| 8 | 19399379 |
| 9 | 446185739 |
| 10 | 12939386459 |
| 11 | 401120980259 |
| 12 | 14841476269619 |
| 13 | 608500527054419 |
| 14 | 26165522663340059 |
| 15 | 1229779565176982819 |
| 16 | 65178316954380089459 |
| 17 | 3845520700308425278139 |
| 18 | 234576762718813941966539 |
[1,3,11,59,419,4619,60059,1021019,19399379, 446185739,12939386459,401120980259,14841476269619, 608500527054419,26165522663340059, 1229779565176982819,65178316954380089459, 3845520700308425278139,234576762718813941966539] |