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 | 13 |
| 3 | 2341 |
| 4 | 41001128 |
| 5 | 3352885935529869 |
| 6 | 17147396444547741051849884001699 |
| 7 | 1847333322606272250132077006229901193256553492442739965269739579 |