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 | 1 |
| 4 | 1 |
| 5 | 1 |
| 6 | 2 |
| 7 | 5 |
| 8 | 13 |
| 9 | 33 |
| 10 | 85 |
| 11 | 199 |
| 12 | 445 |
| 13 | 947 |
| 14 | 1909 |
| 15 | 3713 |
| 16 | 7006 |
| 17 | 12765 |
| 18 | 22764 |
| 19 | 39540 |