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 | 22 |
| 2 | 523 |
| 3 | 531456 |
| 4 | 16777232 |
| 5 | 281474976710684 |
| 6 | 150094635296999160 |