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) |
|---|---|
| 1 | 1 |
| 2 | 3 |
| 3 | 6 |
| 4 | 12 |
| 5 | 23 |
| 6 | 46 |
| 7 | 91 |
| 8 | 183 |
| 9 | 367 |
| 10 | 737 |
| 11 | 1478 |
| 12 | 2962 |
| 13 | 5928 |
| 14 | 11858 |
| 15 | 23707 |
| 16 | 47384 |
| 17 | 94698 |
| 18 | 189260 |
| 19 | 378277 |
| 20 | 756160 |
| 21 | 1511730 |
| 22 | 3022672 |
| 23 | 6044472 |
| 24 | 12088395 |
| 25 | 24177600 |
| 26 | 48359695 |
| 27 | 96732370 |
| 28 | 193495606 |
| 29 | 387057584 |
| 30 | 774248858 |
| 31 | 1548754115 |
| 32 | 3097980230 |
| 33 | 6196797193 |
| 34 | 12395022288 |