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 | 0 |
| 2 | 1 |
| 3 | 3 |
| 4 | 6 |
| 5 | 12 |
| 6 | 24 |
| 7 | 46 |
| 8 | 87 |
| 9 | 164 |
| 10 | 308 |
| 11 | 577 |
| 12 | 1080 |
| 13 | 2021 |
| 14 | 3779 |
| 15 | 7058 |
| 16 | 13166 |
| 17 | 24533 |
| 18 | 45674 |
| 19 | 84978 |
| 20 | 158026 |
| 21 | 293737 |
| 22 | 545747 |
| 23 | 1013467 |
| 24 | 1881032 |
| 25 | 3489303 |
| 26 | 6468910 |
| 27 | 11985988 |
| 28 | 22195905 |
| 29 | 41080751 |
| 30 | 75994642 |
| 31 | 140514019 |
| 32 | 259693004 |
| 33 | 479749492 |
| 34 | 885910870 |
| 35 | 1635281386 |