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 | 0 |
| 2 | 1 |
| 3 | 1 |
| 4 | 4 |
| 5 | 5 |
| 6 | 11 |
| 7 | 22 |
| 8 | 57 |
| 9 | 51 |
| 10 | 156 |
| 11 | 158 |
| 12 | 566 |
| 13 | 499 |
| 14 | 1366 |
| 15 | 3978 |
| 16 | 5900 |
| 17 | 7094 |
| 18 | 19204 |