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 | 1 |
| 3 | 1 |
| 4 | 3 |
| 5 | 16 |
| 6 | 24 |
| 7 | 45 |
| 8 | 158 |
| 9 | 410 |
| 10 | 946 |
| 11 | 1182 |
| 12 | 8786 |
| 13 | 16159 |
| 14 | 20188 |
| 15 | 61392 |
| 16 | 78800 |
| 17 | 78959 |
| 18 | 217556 |