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 | 1 |
| 2 | 2 |
| 3 | 4 |
| 4 | 7 |
| 5 | 14 |
| 6 | 27 |
| 7 | 50 |
| 8 | 96 |
| 9 | 185 |
| 10 | 353 |
| 11 | 672 |
| 12 | 1289 |
| 13 | 2466 |
| 14 | 4722 |
| 15 | 9052 |
| 16 | 17342 |
| 17 | 33244 |
| 18 | 63767 |
| 19 | 122325 |
| 20 | 234727 |
| 21 | 450553 |
| 22 | 864975 |
| 23 | 1660951 |
| 24 | 3190089 |
| 25 | 6128033 |