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 | 1 |
| 1 | 0 |
| 2 | 1 |
| 3 | 2 |
| 4 | 7 |
| 5 | 8 |
| 6 | 37 |
| 7 | 40 |
| 8 | 200 |
| 9 | 258 |
| 10 | 1039 |
| 11 | 1501 |
| 12 | 7629 |
| 13 | 10109 |
| 14 | 54322 |
| 15 | 83975 |
| 16 | 527036 |
| 17 | 780193 |
| 18 | 5808293 |