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 | 296 |
| 3 | 36772 |
| 4 | 1288688 |
| 5 | 96641548 |
| 6 | 26576092808 |
| 7 | 8637277012172 |
| 8 | 1079658805128928 |
| 9 | 91770997994914276 |
| 10 | 43591225139846360008 |