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 | 2 |
| 2 | 4 |
| 3 | 8 |
| 4 | 16 |
| 5 | 30 |
| 6 | 56 |
| 7 | 104 |
| 8 | 194 |
| 9 | 363 |
| 10 | 682 |
| 11 | 1286 |
| 12 | 2432 |
| 13 | 4612 |
| 14 | 8766 |
| 15 | 16701 |
| 16 | 31887 |
| 17 | 61017 |
| 18 | 117001 |
| 19 | 224812 |
| 20 | 432789 |
| 21 | 834689 |
| 22 | 1612548 |
| 23 | 3120361 |
| 24 | 6047274 |
| 25 | 11736581 |
| 26 | 22809338 |
| 27 | 44385205 |
| 28 | 86473743 |
| 29 | 168662839 |
| 30 | 329316660 |
| 31 | 643634073 |
| 32 | 1259124723 |
| 33 | 2465346235 |