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) |
|---|---|
| 3 | 3 |
| 4 | 8 |
| 5 | 25 |
| 6 | 89 |
| 7 | 357 |
| 8 | 1602 |
| 9 | 7959 |
| 10 | 43127 |
| 11 | 250591 |
| 12 | 1537051 |
| 13 | 9827077 |