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| n | a(n) |
|---|---|
| 1 | 5 |
| 2 | 97 |
| 3 | 997 |
| 4 | 9997 |
| 5 | 99989 |
| 6 | 999997 |
| 7 | 9999977 |
| 8 | 99999997 |
| 9 | 999999961 |
| 10 | 9999999997 |
| 11 | 99999999997 |
| 12 | 999999999989 |
| 13 | 9999999999989 |
| 14 | 99999999999985 |
| 15 | 999999999999989 |
| 16 | 9999999999999953 |
| 17 | 99999999999999997 |
| 18 | 999999999999999989 |
[5,97,997,9997,99989,999997,9999977,99999997, 999999961,9999999997,99999999997,999999999989, 9999999999989,99999999999985,999999999999989, 9999999999999953,99999999999999997, 999999999999999989] |