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| n | a(n) |
|---|---|
| 1 | 78 |
| 2 | 1770 |
| 3 | 72771 |
| 4 | 6787770 |
| 5 | 37779778 |
| 6 | 2476777771 |
| 7 | 7477727778 |
| 8 | 7077757275771 |
| 9 | 27778877747778 |
| 10 | 177775772774775 |
| 11 | 7777755777787716 |
| 12 | 172777077787777785 |
| 13 | 7987777777779277726 |
| 14 | 177577777275777787371 |
| 15 | 377679777777377717778 |
| 16 | 77773137747757777775775 |
| 17 | 777367777737777774977796 |
| 18 | 67775787670776777773777778 |
[78,1770,72771,6787770,37779778,2476777771, 7477727778,7077757275771,27778877747778, 177775772774775,7777755777787716, 172777077787777785,7987777777779277726, 177577777275777787371,377679777777377717778, 77773137747757777775775,777367777737777774977796, 67775787670776777773777778] |