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 | 6 |
| 2 | 60 |
| 3 | 916 |
| 4 | 16698 |
| 5 | 336210 |
| 6 | 7218768 |
| 7 | 162185112 |
| 8 | 3769221330 |
| 9 | 89924613880 |