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 | 2 |
| 4 | 5 |
| 5 | 7 |
| 6 | 12 |
| 7 | 23 |
| 8 | 39 |
| 9 | 72 |
| 10 | 122 |
| 11 | 246 |
| 12 | 417 |
| 13 | 799 |
| 14 | 1376 |
| 15 | 2779 |
| 16 | 4846 |
| 17 | 9569 |
| 18 | 17092 |
| 19 | 34351 |
| 20 | 60653 |
| 21 | 121738 |
| 22 | 216916 |
| 23 | 440337 |
| 24 | 786408 |
| 25 | 1601964 |
| 26 | 2876617 |
| 27 | 5895645 |
| 28 | 10583728 |
| 29 | 21674188 |
| 30 | 39107151 |
| 31 | 80559309 |
| 32 | 145468029 |
| 33 | 299785833 |