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) |
|---|---|
| 0 | 1 |
| 1 | 0 |
| 2 | 0 |
| 3 | 0 |
| 4 | 0 |
| 5 | 1 |
| 6 | 0 |
| 7 | 0 |
| 8 | 2 |
| 9 | 0 |
| 10 | 4 |
| 11 | 2 |
| 12 | 9 |
| 13 | 9 |
| 14 | 22 |
| 15 | 32 |
| 16 | 66 |
| 17 | 104 |
| 18 | 200 |
| 19 | 348 |
| 20 | 646 |
| 21 | 1172 |
| 22 | 2144 |
| 23 | 3964 |
| 24 | 7285 |
| 25 | 13581 |
| 26 | 25136 |
| 27 | 47070 |
| 28 | 87700 |
| 29 | 164764 |
| 30 | 309308 |
| 31 | 582152 |
| 32 | 1098698 |
| 33 | 2074484 |