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 | 2 |
| 1 | 1 |
| 2 | 1211 |
| 3 | 1241 |
| 4 | 142251 |
| 5 | 15243241 |
| 6 | 2534134241 |
| 7 | 2554334241 |
| 8 | 3564434231 |
| 9 | 163564533221 |
| 10 | 363544633231 |
| 11 | 463534833231 |
| 12 | 183625441032221 |
| 13 | 2826254473524110 |
| 14 | 281726355433825120 |
| 15 | 382726554443824120 |
| 16 | 482726555453823120 |
| 17 | 482726656443822120 |
| 18 | 482746555433922120 |