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 | 10 |
| 3 | 338 |
| 4 | 42976 |
| 5 | 21040112 |
| 6 | 39882864736 |
| 7 | 292604283435872 |
| 8 | 8286284310367538176 |