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 | 11 |
| 2 | 22 |
| 3 | 1212 |
| 4 | 2121 |
| 5 | 121121 |
| 6 | 212212 |
| 7 | 12211221 |
| 8 | 21122112 |
| 9 | 122112122112 |
| 10 | 211221211221 |
| 11 | 1221211212212112 |
| 12 | 2112122121121221 |
| 13 | 122121121221122121121221 |
| 14 | 211212212112211212212112 |
| 15 | 12212112211212211221211221121221 |
| 16 | 21121221122121122112122112212112 |