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 | 3 |
| 2 | 17 |
| 3 | 110 |
| 4 | 789 |
| 5 | 6395 |
| 6 | 52610 |
| 7 | 445868 |
| 8 | 3857543 |
| 9 | 34057327 |