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 | 2 |
| 2 | 3 |
| 3 | 7 |
| 4 | 43 |
| 5 | 3613 |
| 6 | 65250781 |
| 7 | 5109197227031017 |
| 8 | 21753246920584523633819544186061 |
| 9 | 993727878334632126576336773629979379563850938567846991629270287 |