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| n | a(n) |
|---|---|
| 1 | 8 |
| 2 | 88 |
| 3 | 888 |
| 4 | 9888 |
| 5 | 89888 |
| 6 | 989888 |
| 7 | 9989888 |
| 8 | 89989888 |
| 9 | 989989888 |
| 10 | 8989989888 |
| 11 | 98989989888 |
| 12 | 898989989888 |
| 13 | 8898989989888 |
| 14 | 98898989989888 |
| 15 | 998898989989888 |
| 16 | 8998898989989888 |
| 17 | 98998898989989888 |
| 18 | 898998898989989888 |
[8,88,888,9888,89888,989888,9989888,89989888, 989989888,8989989888,98989989888,898989989888, 8898989989888,98898989989888,998898989989888, 8998898989989888,98998898989989888, 898998898989989888] |