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 | 1 |
| 2 | 30 |
| 3 | 236242 |
| 4 | 12544246390 |
| 5 | 1229164015128849604270 |
| 6 | 1367914941518920202892096130 |
| 7 | 10989801394147610473210727542088302770490 |
| 8 | 67520322268089344459189867921056960354422886750 |