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 | 15 |
| 5 | 16 |
| 6 | 24 |
| 7 | 57 |
| 8 | 206 |
| 9 | 284 |
| 10 | 1290 |
| 11 | 1722 |
| 12 | 1862 |
| 13 | 1866 |
| 14 | 3271 |
| 15 | 5306 |
| 16 | 5474 |
| 17 | 15401 |
| 18 | 18729 |
| 19 | 34757 |
| 20 | 42842 |
| 21 | 63930 |
| 22 | 89967 |