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) |
|---|---|
| 0 | 2 |
| 1 | 3 |
| 2 | 8 |
| 3 | 63 |
| 4 | 3968 |
| 5 | 15745023 |
| 6 | 247905749270528 |
| 7 | 61457260521381894004129398783 |
| 8 | 3776994870793005510047522464634252677140721938309041881088 |