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 | 3 |
| 3 | 11 |
| 4 | 44 |
| 5 | 184 |
| 6 | 784 |
| 7 | 3370 |
| 8 | 14544 |
| 9 | 62862 |
| 10 | 271804 |
| 11 | 1175133 |
| 12 | 5079516 |
| 13 | 21951384 |
| 14 | 94847528 |
| 15 | 409767878 |
| 16 | 1770177486 |