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) |
|---|---|
| 0 | 1 |
| 1 | 2 |
| 2 | 5 |
| 3 | 27 |
| 4 | 923 |
| 5 | 909182 |
| 6 | 1046593950039 |
| 7 | 1168971346319460027570137 |
| 8 | 1730152138254248421873938035305987364739567671241 |