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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 0 |
| 3 | 8 |
| 4 | 68 |
| 5 | 88 |
| 6 | 688 |
| 7 | 888 |
| 8 | 6888 |
| 9 | 8888 |
| 10 | 68888 |
| 11 | 88888 |
| 12 | 688888 |
| 13 | 888888 |
| 14 | 6888888 |
| 15 | 8888888 |
| 16 | 68888888 |
| 17 | 88888888 |
| 18 | 688888888 |
| 19 | 888888888 |
| 20 | 6888888888 |
| 21 | 8888888888 |
| 22 | 68888888888 |
| 23 | 88888888888 |
| 24 | 688888888888 |
| 25 | 888888888888 |
| 26 | 6888888888888 |
| 27 | 8888888888888 |
| 28 | 68888888888888 |
[1,0,8,68,88,688,888,6888,8888,68888,88888,688888, 888888,6888888,8888888,68888888,88888888, 688888888,888888888,6888888888,8888888888, 68888888888,88888888888,688888888888,888888888888, 6888888888888,8888888888888,68888888888888] |