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 | 1 |
| 3 | 0 |
| 4 | 2 |
| 5 | 4 |
| 6 | 7 |
| 7 | 13 |
| 8 | 26 |
| 9 | 50 |
| 10 | 96 |
| 11 | 185 |
| 12 | 357 |
| 13 | 688 |
| 14 | 1326 |
| 15 | 2556 |
| 16 | 4927 |
| 17 | 9497 |
| 18 | 18306 |
| 19 | 35286 |
| 20 | 68016 |
| 21 | 131105 |
| 22 | 252713 |
| 23 | 487120 |
| 24 | 938954 |
| 25 | 1809892 |
| 26 | 3488679 |
| 27 | 6724645 |
| 28 | 12962170 |
| 29 | 24985386 |
| 30 | 48160880 |
| 31 | 92833081 |
| 32 | 178941517 |
| 33 | 344920864 |
| 34 | 664856342 |
| 35 | 1281551804 |