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| n | a(n) |
|---|---|
| 1 | 9 |
| 2 | 25 |
| 3 | 225 |
| 4 | 529 |
| 5 | 5929 |
| 6 | 29929 |
| 7 | 55225 |
| 8 | 99225 |
| 9 | 2295225 |
| 10 | 5929225 |
| 11 | 52229529 |
| 12 | 552955225 |
| 13 | 2952292225 |
| 14 | 9559559529 |
| 15 | 59299555225 |
| 16 | 5929599995929 |
| 17 | 9552259592929 |
| 18 | 5255925929995225 |
| 19 | 5555255292952225 |
| 20 | 92922592295555529529 |
[9,25,225,529,5929,29929,55225,99225,2295225, 5929225,52229529,552955225,2952292225,9559559529, 59299555225,5929599995929,9552259592929, 5255925929995225,5555255292952225, 92922592295555529529] |