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 | 21322314 |
| 5 | 21322315 |
| 6 | 21322316 |
| 7 | 21322317 |
| 8 | 21322318 |
| 9 | 21322319 |
| 10 | 31123314 |
| 11 | 31123315 |
| 12 | 31123316 |
| 13 | 31123317 |
| 14 | 31123318 |
| 15 | 31123319 |
| 16 | 31331415 |
| 17 | 31331416 |
| 18 | 31331417 |
| 19 | 31331418 |
| 20 | 31331419 |
| 21 | 31331516 |
| 22 | 31331517 |
| 23 | 31331518 |