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) |
|---|---|
| 0 | 1 |
| 1 | 3 |
| 2 | 3 |
| 3 | 14 |
| 4 | 50 |
| 5 | 261 |
| 6 | 1397 |
| 7 | 8364 |
| 8 | 50643 |
| 9 | 315512 |
| 10 | 1984853 |
| 11 | 12619579 |
| 12 | 80802300 |
| 13 | 520724842 |
| 14 | 3373646060 |
| 15 | 21959949924 |
| 16 | 143527242317 |