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 | 5 |
| 3 | 11 |
| 4 | 67 |
| 5 | 163 |
| 6 | 10243 |
| 7 | 22531 |
| 8 | 7516192771 |
| 9 | 43980465111043 |
| 10 | 142788163609707759784588649053552643 |
| 11 | 2637188343637273091841153207596203638787 |