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 | 256 |
| 2 | 636416 |
| 3 | 70925781248 |
| 4 | 36430999887109373 |
| 5 | 5031679407516945387109374 |