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 | 1 |
| 2 | 2 |
| 3 | 6 |
| 4 | 12 |
| 5 | 25 |
| 6 | 48 |
| 7 | 91 |
| 8 | 168 |
| 9 | 306 |
| 10 | 550 |
| 11 | 979 |
| 12 | 1728 |
| 13 | 3029 |
| 14 | 5278 |
| 15 | 9150 |
| 16 | 15792 |
| 17 | 27149 |
| 18 | 46512 |
| 19 | 79439 |
| 20 | 135300 |
| 21 | 229866 |
| 22 | 389642 |
| 23 | 659111 |
| 24 | 1112832 |