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 | 1 |
| 2 | 2 |
| 3 | 9 |
| 4 | 66 |
| 5 | 1244 |
| 6 | 32524 |
| 7 | 1114549 |
| 8 | 47513547 |
| 9 | 2401002993 |
| 10 | 140026612346 |