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 | 2 |
| 4 | 6 |
| 5 | 11 |
| 6 | 33 |
| 7 | 94 |
| 8 | 370 |
| 9 | 1627 |
| 10 | 8895 |
| 11 | 56416 |
| 12 | 414456 |
| 13 | 3382661 |