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 | 0 |
| 2 | 1 |
| 3 | 2 |
| 4 | 4 |
| 5 | 6 |
| 6 | 13 |
| 7 | 24 |
| 8 | 45 |
| 9 | 84 |
| 10 | 160 |
| 11 | 300 |
| 12 | 565 |
| 13 | 1064 |
| 14 | 2005 |
| 15 | 3774 |
| 16 | 7108 |
| 17 | 13386 |
| 18 | 25209 |
| 19 | 47472 |
| 20 | 89401 |
| 21 | 168360 |
| 22 | 317056 |
| 23 | 597080 |
| 24 | 1124425 |
| 25 | 2117520 |
| 26 | 3987721 |
| 27 | 7509690 |
| 28 | 14142276 |
| 29 | 26632782 |
| 30 | 50154949 |
| 31 | 94451976 |
| 32 | 177872293 |