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 | 1 |
| 2 | 2 |
| 3 | 4 |
| 4 | 7 |
| 5 | 14 |
| 6 | 26 |
| 7 | 51 |
| 8 | 99 |
| 9 | 195 |
| 10 | 383 |
| 11 | 759 |
| 12 | 1504 |
| 13 | 2988 |
| 14 | 5944 |
| 15 | 11840 |
| 16 | 23602 |
| 17 | 47084 |
| 18 | 93975 |
| 19 | 187647 |
| 20 | 374812 |
| 21 | 748857 |
| 22 | 1496487 |
| 23 | 2991017 |
| 24 | 5978900 |
| 25 | 11952780 |
| 26 | 23897506 |
| 27 | 47782081 |
| 28 | 95543378 |
| 29 | 191053334 |
| 30 | 382052880 |
| 31 | 764019152 |
| 32 | 1527898772 |
| 33 | 3055572646 |
| 34 | 6110782652 |
| 35 | 12220980359 |