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| n | a(n) |
|---|---|
| 1 | 59 |
| 2 | 55599959 |
| 3 | 99555959 |
| 4 | 5555995999 |
| 5 | 5559999559 |
| 6 | 5595959959 |
| 7 | 5595999559 |
| 8 | 5599595959 |
| 9 | 5599959559 |
| 10 | 5955559999 |
| 11 | 5955599959 |
| 12 | 5959559959 |
| 13 | 5959599559 |
| 14 | 5995559599 |
| 15 | 5995559959 |
| 16 | 5995995559 |
| 17 | 5999555959 |
| 18 | 9555599959 |
| 19 | 9555959599 |
| 20 | 9555995959 |
| 21 | 9555999559 |
| 22 | 9559595599 |
[59,55599959,99555959,5555995999,5559999559, 5595959959,5595999559,5599595959,5599959559, 5955559999,5955599959,5959559959,5959599559, 5995559599,5995559959,5995995559,5999555959, 9555599959,9555959599,9555995959,9555999559, 9559595599] |