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 | 2 |
| 3 | 4 |
| 4 | 6 |
| 5 | 11 |
| 6 | 19 |
| 7 | 34 |
| 8 | 63 |
| 9 | 117 |
| 10 | 218 |
| 11 | 411 |
| 12 | 780 |
| 13 | 1487 |
| 14 | 2849 |
| 15 | 5477 |
| 16 | 10562 |
| 17 | 20419 |
| 18 | 39563 |
| 19 | 76805 |
| 20 | 149360 |
| 21 | 290896 |
| 22 | 567321 |
| 23 | 1107775 |
| 24 | 2165487 |
| 25 | 4237384 |
| 26 | 8299283 |
| 27 | 16268639 |
| 28 | 31915437 |
| 29 | 62656158 |
| 30 | 123088460 |
| 31 | 241958676 |
| 32 | 475901501 |
| 33 | 936544684 |