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 | 1 |
| 2 | 11 |
| 3 | 12 |
| 4 | 1121 |
| 5 | 122111 |
| 6 | 112213 |
| 7 | 12221131 |
| 8 | 1123123111 |
| 9 | 12213111213113 |
| 10 | 11221131132111311231 |
| 11 | 12221231123121133112213111 |
| 12 | 1123112131122131112112321222113113 |
| 13 | 1221311221113112221131132112213121112312311231 |