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 | 24 |
| 2 | 1880 |
| 3 | 68876 |
| 4 | 2316638 |
| 5 | 94747953 |
| 6 | 4581555620 |
| 7 | 234861499280 |
| 8 | 12266888439720 |
| 9 | 650084333233220 |