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 | 22 |
| 2 | 10213223 |
| 3 | 10311233 |
| 4 | 10313314 |
| 5 | 10313315 |
| 6 | 21322314 |
| 7 | 21322315 |
| 8 | 31123314 |
| 9 | 31123315 |
| 10 | 31331415 |
| 11 | 1031223314 |
| 12 | 1031223315 |
| 13 | 3122331415 |
| 14 | 10111121314 |
| 15 | 10111121315 |
| 16 | 10111121415 |
| 17 | 10111131415 |
| 18 | 11112131415 |
| 19 | 103142132415 |
| 20 | 104122232415 |
| 21 | 1011122131415 |