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 | 2801 |
| 2 | 16148168401 |
| 3 | 85053461164796801949539541639542805770666392330682673302530819774105141531698707146930307290253537320447270457 |