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 | 39 |
| 2 | 507 |
| 3 | 2379 |
| 4 | 6591 |
| 5 | 13167 |
| 6 | 29511 |
| 7 | 148955 |
| 8 | 1672209 |
| 9 | 8852259 |
| 10 | 212370543 |
| 11 | 1929229929 |