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 | 7 |
| 4 | 62 |
| 5 | 324 |
| 6 | 1647 |
| 7 | 3566 |
| 8 | 5464 |
| 9 | 8655 |
| 10 | 8817 |
| 11 | 123956 |
| 12 | 132891 |
| 13 | 182098 |
| 14 | 566593 |
| 15 | 2189647 |
| 16 | 2189648 |
| 17 | 3501843 |
| 18 | 3501844 |