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) |
|---|---|
| 0 | 3 |
| 1 | 1 |
| 2 | 1311 |
| 3 | 1341 |
| 4 | 142351 |
| 5 | 1524231241 |
| 6 | 2534234251 |
| 7 | 3544336241 |
| 8 | 163554534221 |
| 9 | 264554533231 |
| 10 | 266544534231 |
| 11 | 365554534221 |
| 12 | 366554434221 |
| 13 | 366554434221 |
| 14 | 464564434221 |
| 15 | 463584334221 |
| 16 | 18362584434221 |
| 17 | 38262564535231 |