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| n | a(n) |
|---|---|
| 1 | 8 |
| 2 | 98 |
| 3 | 998 |
| 4 | 9998 |
| 5 | 99998 |
| 6 | 999998 |
| 7 | 9999998 |
| 8 | 99999998 |
| 9 | 999999998 |
| 10 | 9999999998 |
| 11 | 36363636361 |
| 12 | 45454545452 |
| 13 | 54545454543 |
| 14 | 63636363634 |
| 15 | 72727272725 |
| 16 | 81818181816 |
| 17 | 90909090907 |
| 18 | 99999999998 |
| 19 | 999999999998 |
| 20 | 9999999999998 |
[8,98,998,9998,99998,999998,9999998,99999998, 999999998,9999999998,36363636361,45454545452, 54545454543,63636363634,72727272725,81818181816, 90909090907,99999999998,999999999998, 9999999999998] |