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 | 1 |
| 2 | 2 |
| 3 | 7 |
| 4 | 12 |
| 5 | 25 |
| 6 | 44 |
| 7 | 219 |
| 8 | 252 |
| 9 | 507 |
| 10 | 1155 |
| 11 | 2259 |
| 12 | 2972 |
| 13 | 4584 |
| 14 | 12422 |
| 15 | 13905 |
| 16 | 75606 |