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 | 252 |
| 2 | 2772 |
| 3 | 20502 |
| 4 | 23632 |
| 5 | 25452 |
| 6 | 26962 |
| 7 | 27972 |
| 8 | 48384 |
| 9 | 225522 |
| 10 | 252252 |
| 11 | 259952 |
| 12 | 279972 |
| 13 | 619916 |
| 14 | 1113111 |
| 15 | 1226221 |
| 16 | 1357531 |
| 17 | 2005002 |
| 18 | 2070702 |
| 19 | 2126212 |
| 20 | 2150512 |
| 21 | 2216122 |
| 22 | 2226222 |
| 23 | 2249422 |
| 24 | 2275722 |
| 25 | 2316132 |
| 26 | 2347432 |
| 27 | 2386832 |
| 28 | 2429242 |