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 | 1 |
| 2 | 8 |
| 3 | 216 |
| 4 | 19584 |
| 5 | 5542200 |
| 6 | 4551802560 |
| 7 | 10225942680240 |
| 8 | 60077099766620160 |