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 | 5 |
| 3 | 17 |
| 4 | 8893 |
| 5 | 868151 |
| 6 | 3875933 |
| 7 | 219554912086470964379 |
| 8 | 63036368490471985096643 |
| 9 | 26151660747268050131008657684404431 |