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 | 78 |
| 2 | 117 |
| 3 | 156 |
| 4 | 288 |
| 5 | 11127 |
| 6 | 11667 |
| 7 | 23388 |
| 8 | 27888 |
| 9 | 111177 |
| 10 | 228888 |
| 11 | 111111777 |
| 12 | 222888888 |
| 13 | 1111122267 |
| 14 | 3333337788 |
| 15 | 111111117777 |
| 16 | 222288888888 |
| 17 | 111111111177777 |
| 18 | 222228888888888 |
| 19 | 111111111111777777 |
| 20 | 222222888888888888 |