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 | 945 |
| 2 | 8505 |
| 3 | 15015 |
| 4 | 19305 |
| 5 | 21735 |
| 6 | 33345 |
| 7 | 34125 |
| 8 | 21961263753 |
| 9 | 39891817245 |