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 | 2810694 |
| 2 | 423657524608288 |
| 3 | 42127221925485860896792 |
| 4 | 4435122353330774501960785797973 |
| 5 | 463310369790129032480118384076035223552 |