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 | 3 |
| 2 | 55 |
| 3 | 8385 |
| 4 | 353833535835 |
| 5 | 338385588883835583555 |
| 6 | 5838535388555338533383385 |
| 7 | 55335355335583353383833585 |