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 | 1 |
| 3 | 2 |
| 4 | 4 |
| 5 | 7 |
| 6 | 14 |
| 7 | 27 |
| 8 | 54 |
| 9 | 108 |
| 10 | 215 |
| 11 | 429 |
| 12 | 857 |
| 13 | 1713 |
| 14 | 3425 |
| 15 | 6849 |
| 16 | 13697 |
| 17 | 27393 |
| 18 | 54785 |
| 19 | 109570 |
| 20 | 219140 |
| 21 | 438279 |
| 22 | 876558 |
| 23 | 1753116 |
| 24 | 3506231 |
| 25 | 7012462 |
| 26 | 14024924 |
| 27 | 28049847 |
| 28 | 56099693 |
| 29 | 112199386 |
| 30 | 224398771 |
| 31 | 448797541 |
| 32 | 897595081 |
| 33 | 1795190161 |
| 34 | 3590380321 |
| 35 | 7180760642 |
| 36 | 14361521283 |