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 | 22 |
| 3 | 122 |
| 4 | 221 |
| 5 | 333 |
| 6 | 1221 |
| 7 | 1333 |
| 8 | 3331 |
| 9 | 4444 |
| 10 | 13331 |
| 11 | 14444 |
| 12 | 22122 |
| 13 | 22333 |
| 14 | 33322 |
| 15 | 44441 |
| 16 | 55555 |
| 17 | 122122 |
| 18 | 122333 |
| 19 | 133322 |
| 20 | 144441 |
| 21 | 155555 |
| 22 | 221221 |
| 23 | 221333 |
| 24 | 223331 |
| 25 | 224444 |
| 26 | 333122 |
| 27 | 333221 |
| 28 | 444422 |
| 29 | 555551 |
| 30 | 666666 |
| 31 | 1221221 |
| 32 | 1221333 |
| 33 | 1223331 |