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 | 8 |
| 3 | 34 |
| 4 | 134 |
| 5 | 615 |
| 6 | 2813 |
| 7 | 13415 |
| 8 | 65162 |
| 9 | 323858 |
| 10 | 1626844 |
| 11 | 8268241 |
| 12 | 42417710 |