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) |
|---|---|
| 0 | 9 |
| 1 | 292 |
| 2 | 22922 |
| 3 | 2229222 |
| 4 | 222292222 |
| 5 | 22222922222 |
| 6 | 2222229222222 |
| 7 | 222222292222222 |
| 8 | 22222222922222222 |
| 9 | 2222222229222222222 |
| 10 | 222222222292222222222 |
| 11 | 22222222222922222222222 |
| 12 | 2222222222229222222222222 |
| 13 | 222222222222292222222222222 |
| 14 | 22222222222222922222222222222 |
| 15 | 2222222222222229222222222222222 |