This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.
| n | a(n) |
|---|---|
| 1 | 6 |
| 2 | 66 |
| 3 | 78 |
| 4 | 666 |
| 5 | 6786 |
| 6 | 8778 |
| 7 | 676866 |
| 8 | 887778 |
| 9 | 88877778 |
| 10 | 8888777778 |
| 11 | 888887777778 |
| 12 | 7768686676878 |
| 13 | 68886888677778 |
| 14 | 88888877777778 |
| 15 | 8888888777777778 |
| 16 | 888888887777777778 |
| 17 | 88888888877777777778 |
| 18 | 8888888888777777777778 |
| 19 | 86686767888666878787778 |
| 20 | 786777868668667866767766 |