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 | 3 |
| 1 | 232 |
| 2 | 22322 |
| 3 | 2223222 |
| 4 | 222232222 |
| 5 | 22222322222 |
| 6 | 2222223222222 |
| 7 | 222222232222222 |
| 8 | 22222222322222222 |
| 9 | 2222222223222222222 |
| 10 | 222222222232222222222 |
| 11 | 22222222222322222222222 |
| 12 | 2222222222223222222222222 |
| 13 | 222222222222232222222222222 |
| 14 | 22222222222222322222222222222 |
| 15 | 2222222222222223222222222222222 |