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 | 5 |
| 2 | 167 |
| 3 | 1063 |
| 4 | 1597 |
| 5 | 2749 |
| 6 | 3373 |
| 7 | 13691 |
| 8 | 83891 |
| 9 | 131591 |