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) |
|---|---|
| 3 | 312 |
| 4 | 14704 |
| 5 | 2183490 |
| 6 | 995818716 |
| 7 | 1383238940818 |
| 8 | 5846378997135040 |
| 9 | 75162787766308673244 |