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 | 1 |
2 | 2 |
3 | 42 |
4 | 24024 |
5 | 701149020 |
6 | 1671643033734960 |
7 | 475073684264389879228560 |
8 | 22081374992701950398847674830857600 |
9 | 220381378415074546123953914908618547085974856000 |
10 | 599868742615440724911356453304513631101279740967209774643120000 |