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 | 0 |
| 1 | 0 |
| 2 | 0 |
| 3 | 4 |
| 4 | 4 |
| 5 | 6 |
| 6 | 6 |
| 7 | 3 |
| 8 | 13 |
| 9 | 22 |
| 10 | 35 |
| 11 | 32 |
| 12 | 36 |
| 13 | 89 |
| 14 | 158 |
| 15 | 342 |
| 16 | 586 |
| 17 | 913 |
| 18 | 1490 |
| 19 | 2365 |
| 20 | 3884 |
| 21 | 5940 |
| 22 | 8629 |
| 23 | 12386 |
| 24 | 17637 |
| 25 | 26311 |