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 | 0 |
| 1 | 12 |
| 2 | 1122 |
| 3 | 111222 |
| 4 | 11112222 |
| 5 | 1111122222 |
| 6 | 111111222222 |
| 7 | 11111112222222 |
| 8 | 1111111122222222 |
| 9 | 111111111222222222 |
| 10 | 11111111112222222222 |
| 11 | 1111111111122222222222 |
| 12 | 111111111111222222222222 |
| 13 | 11111111111112222222222222 |
| 14 | 1111111111111122222222222222 |