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 | 2 |
| 2 | 4 |
| 3 | 10 |
| 4 | 26 |
| 5 | 70 |
| 6 | 216 |
| 7 | 682 |
| 8 | 2264 |
| 9 | 7960 |
| 10 | 29262 |
| 11 | 113256 |
| 12 | 452586 |
| 13 | 1886306 |
| 14 | 8109828 |
| 15 | 36274448 |
| 16 | 167157176 |