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 | 10 |
| 6 | 11 |
| 7 | 18 |
| 8 | 20 |
| 9 | 32 |
| 10 | 90 |
| 11 | 129 |
| 12 | 188 |
| 13 | 244 |
| 14 | 678 |
| 15 | 688 |
| 16 | 756 |
| 17 | 1081 |
| 18 | 1322 |
| 19 | 1477 |
| 20 | 19758 |
| 21 | 21351 |
| 22 | 29518 |
| 23 | 43187 |
| 24 | 49978 |
| 25 | 50342 |
| 26 | 95708 |
| 27 | 182326 |
| 28 | 248253 |