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 | 94 |
| 5 | 1486 |
| 6 | 38890 |
| 7 | 1430442 |
| 8 | 77291510 |
| 9 | 7826336608 |
| 10 | 3904851153672 |