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) |
|---|---|
| 4 | 1 |
| 5 | 1 |
| 6 | 4 |
| 7 | 6 |
| 8 | 28 |
| 9 | 77 |
| 10 | 386 |
| 11 | 1787 |
| 12 | 10354 |
| 13 | 62040 |
| 14 | 404093 |
| 15 | 2725484 |
| 16 | 19078248 |