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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 33 |
| 3 | 666 |
| 4 | 11110 |
| 5 | 166665 |
| 6 | 2333331 |
| 7 | 31111108 |
| 8 | 399999996 |
| 9 | 4999999995 |
| 10 | 509876543215 |
| 11 | 52098641976336 |
| 12 | 5331076296399558 |
| 13 | 546238942849832881 |
| 14 | 56038035699304276305 |
| 15 | 5755318721445859729830 |
| 16 | 591693488306202516193456 |
[1,33,666,11110,166665,2333331,31111108,399999996, 4999999995,509876543215,52098641976336, 5331076296399558,546238942849832881, 56038035699304276305,5755318721445859729830, 591693488306202516193456] |