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 | 2 |
| 1 | 44 |
| 2 | 20423 |
| 3 | 44000019674522 |
| 4 | 94795168748875590352885902121951400734836 |