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 | 22999 |
| 2 | 55577 |
| 3 | 1166111 |
| 4 | 2211133 |
| 5 | 2224499 |
| 6 | 3377333 |
| 7 | 4466333 |
| 8 | 5551177 |
| 9 | 5555533 |
| 10 | 5566999 |
| 11 | 5588899 |
| 12 | 6622277 |
| 13 | 6644333 |
| 14 | 6644777 |
| 15 | 6660077 |
| 16 | 6667799 |
| 17 | 7711177 |
| 18 | 7711199 |
| 19 | 7744111 |
| 20 | 7766333 |
| 21 | 7771199 |
| 22 | 7777999 |
| 23 | 7799777 |
| 24 | 8866699 |
| 25 | 8888777 |