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 | 4 |
| 11 | 25 |
| 12 | 107 |
| 13 | 448 |
| 14 | 1701 |
| 15 | 6216 |
| 16 | 21771 |
| 17 | 74339 |
| 18 | 248379 |