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 | 7 |
| 1 | 3 |
| 2 | 13 |
| 3 | 169 |
| 4 | 40134 |
| 5 | 1830451404 |
| 6 | 6293054590385574716 |
| 7 | 99455005060617253985959291400980656073 |
| 8 | 14444603640289593121113624113291244368730444113988502168325108818988403980391 |