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 | 1 |
| 1 | 11 |
| 2 | 111 |
| 3 | 1111 |
| 4 | 11111 |
| 5 | 111111 |
| 6 | 1111111 |
| 7 | 11111111 |
| 8 | 111111111 |
| 9 | 1111111111 |
| 10 | 11111111211 |
| 11 | 111111112211 |
| 12 | 1111111122211 |
| 13 | 11111111222211 |
| 14 | 111111112222211 |
| 15 | 1111111122222211 |
| 16 | 11111111222222211 |
| 17 | 111111112222222211 |
| 18 | 1111111122222222211 |
| 19 | 11111111222222222211 |