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) |
|---|---|
| 5 | 2 |
| 6 | 3 |
| 7 | 14 |
| 8 | 31 |
| 9 | 117 |
| 10 | 278 |
| 11 | 956 |
| 12 | 2578 |
| 13 | 8106 |