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 | 4 |
| 3 | 7 |
| 4 | 35 |
| 5 | 145 |
| 6 | 770 |
| 7 | 4029 |
| 8 | 22739 |
| 9 | 130282 |
| 10 | 766177 |
| 11 | 4566523 |
| 12 | 27587850 |
| 13 | 168340643 |
| 14 | 1036444786 |
| 15 | 6429150260 |
| 16 | 40144480583 |