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 | 4 |
| 5 | 10 |
| 6 | 39 |
| 7 | 160 |
| 8 | 726 |
| 9 | 3344 |
| 10 | 16004 |
| 11 | 77323 |
| 12 | 379117 |
| 13 | 1874540 |