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 | 4 |
| 2 | 16 |
| 3 | 94 |
| 4 | 585 |
| 5 | 3788 |
| 6 | 25768 |
| 7 | 182762 |
| 8 | 1340905 |
| 9 | 10135727 |
| 10 | 78580647 |
| 11 | 622188500 |