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 | 7 |
| 3 | 38 |
| 4 | 241 |
| 5 | 1922 |
| 6 | 17359 |
| 7 | 180854 |
| 8 | 2092801 |
| 9 | 26851202 |
| 10 | 376371799 |