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 | 4 |
| 2 | 256 |
| 3 | 64660 |
| 4 | 32464394 |
| 5 | 24291817048 |
| 6 | 23571122875874 |
| 7 | 27578655986218632 |
| 8 | 37359132548315097216 |