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 | 19 |
| 2 | 1911 |
| 3 | 211911 |
| 4 | 21192112 |
| 5 | 122112192112 |
| 6 | 122112191112212211 |
| 7 | 2122112231191112212211 |
| 8 | 21221122311921132221221112 |
| 9 | 12312211321321121921132221221112 |