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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 17 |
| 2 | 213 |
| 3 | 2389 |
| 4 | 25445 |
| 5 | 263781 |
| 6 | 2693797 |
| 7 | 27273893 |
| 8 | 274754469 |
| 9 | 2759637925 |
| 10 | 27668938661 |
| 11 | 277124743077 |
| 12 | 2773859569573 |
| 13 | 27754268528549 |
| 14 | 277636722282405 |
| 15 | 2776931444805541 |
| 16 | 27772699779944357 |
| 17 | 277747309790777253 |
[1,17,213,2389,25445,263781,2693797,27273893, 274754469,2759637925,27668938661,277124743077, 2773859569573,27754268528549,277636722282405, 2776931444805541,27772699779944357, 277747309790777253] |