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) |
|---|---|
| 9 | 1 |
| 10 | 3 |
| 11 | 8 |
| 12 | 25 |
| 13 | 45 |
| 14 | 137 |
| 15 | 221 |
| 16 | 650 |
| 17 | 1006 |
| 18 | 2857 |
| 19 | 4370 |
| 20 | 12050 |
| 21 | 18417 |
| 22 | 49516 |
| 23 | 76037 |
| 24 | 200184 |
| 25 | 309411 |
| 26 | 800440 |
| 27 | 1245934 |
| 28 | 3176482 |