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 | 2 |
| 2 | 6 |
| 3 | 32 |
| 4 | 108 |
| 5 | 408 |
| 6 | 1286 |
| 7 | 2268 |
| 8 | 2328 |
| 9 | 4284 |
| 10 | 53558 |
| 11 | 181182 |
| 12 | 249010 |