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) |
|---|---|
| 2 | 0 |
| 3 | 0 |
| 4 | 1 |
| 5 | 0 |
| 6 | 1 |
| 7 | 1 |
| 8 | 2 |
| 9 | 2 |
| 10 | 8 |
| 11 | 8 |
| 12 | 32 |
| 13 | 57 |
| 14 | 185 |
| 15 | 466 |
| 16 | 1543 |
| 17 | 4583 |
| 18 | 15374 |
| 19 | 50116 |
| 20 | 171168 |
| 21 | 582603 |
| 22 | 2024119 |
| 23 | 7057472 |
| 24 | 24873248 |
| 25 | 88111772 |
| 26 | 314301078 |
| 27 | 1126716000 |
| 28 | 4060375677 |
| 29 | 14697571234 |
| 30 | 53432834170 |
| 31 | 195015189626 |
| 32 | 714404259151 |
| 33 | 2626130395699 |