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 | 19 |
| 2 | 14748 |
| 3 | 4762206 |
| 4 | 1899336597 |
| 5 | 704281652979 |
| 6 | 268995986029278 |
| 7 | 101554003879403823 |
| 8 | 38514280297010210802 |