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 | 0 |
| 1 | 1 |
| 2 | 5 |
| 3 | 17 |
| 4 | 73 |
| 5 | 245 |
| 6 | 1037 |
| 7 | 4624 |
| 8 | 11829 |
| 9 | 30940 |
| 10 | 116701 |
| 11 | 374756 |
| 12 | 1205149 |
| 13 | 2643792 |
| 14 | 7516934 |
| 15 | 27309591 |
| 16 | 102243621 |