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 | 0 |
| 1 | 1 |
| 2 | 2 |
| 3 | 3 |
| 4 | 5 |
| 5 | 8 |
| 6 | 15 |
| 7 | 24 |
| 8 | 46 |
| 9 | 82 |
| 10 | 157 |
| 11 | 293 |
| 12 | 576 |
| 13 | 1095 |
| 14 | 2138 |
| 15 | 4156 |
| 16 | 8162 |
| 17 | 16019 |
| 18 | 31675 |
| 19 | 62608 |
| 20 | 124341 |
| 21 | 247224 |
| 22 | 493067 |
| 23 | 984905 |
| 24 | 1971970 |
| 25 | 3953749 |
| 26 | 7941397 |
| 27 | 15971775 |
| 28 | 32168510 |
| 29 | 64866564 |
| 30 | 130959749 |
| 31 | 264676274 |
| 32 | 535488128 |
| 33 | 1084424916 |