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 | 111 |
| 3 | 1111 |
| 4 | 1122 |
| 5 | 1212 |
| 6 | 1221 |
| 7 | 11111 |
| 8 | 11122 |
| 9 | 11212 |
| 10 | 11221 |
| 11 | 11222 |
| 12 | 12112 |
| 13 | 12121 |
| 14 | 12122 |
| 15 | 12211 |
| 16 | 12212 |
| 17 | 12221 |
| 18 | 111111 |
| 19 | 111122 |
| 20 | 111212 |
| 21 | 111221 |
| 22 | 111222 |
| 23 | 112112 |