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 | 14 |
| 5 | 27 |
| 6 | 51 |
| 7 | 96 |
| 8 | 183 |
| 9 | 345 |
| 10 | 655 |
| 11 | 1244 |
| 12 | 2363 |
| 13 | 4500 |
| 14 | 8570 |
| 15 | 16347 |
| 16 | 31218 |
| 17 | 59678 |
| 18 | 114236 |
| 19 | 218905 |
| 20 | 419979 |
| 21 | 806693 |
| 22 | 1551247 |
| 23 | 2986469 |
| 24 | 5756025 |
| 25 | 11106397 |
| 26 | 21453737 |
| 27 | 41486062 |
| 28 | 80309039 |
| 29 | 155625030 |
| 30 | 301882458 |
| 31 | 586178231 |
| 32 | 1139315438 |
| 33 | 2216511306 |