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 | 8 |
| 4 | 19 |
| 5 | 41 |
| 6 | 85 |
| 7 | 173 |
| 8 | 349 |
| 9 | 701 |
| 10 | 1405 |
| 11 | 2800 |
| 12 | 5576 |
| 13 | 11128 |
| 14 | 22221 |
| 15 | 44342 |
| 16 | 88422 |
| 17 | 176507 |
| 18 | 352062 |
| 19 | 702831 |
| 20 | 1403235 |
| 21 | 2802382 |
| 22 | 5598862 |
| 23 | 11185734 |
| 24 | 22353592 |
| 25 | 44674558 |