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 | 0 |
| 4 | 1 |
| 5 | 1 |
| 6 | 1 |
| 7 | 2 |
| 8 | 5 |
| 9 | 14 |
| 10 | 35 |
| 11 | 111 |
| 12 | 341 |
| 13 | 1130 |
| 14 | 3969 |
| 15 | 15002 |
| 16 | 58429 |
| 17 | 239045 |
| 18 | 1012241 |