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 | 720 |
2 | 42456960 |
3 | 203039372390400 |
4 | 78660280796419613491200 |
5 | 2468438315722201136962330755072000 |
6 | 6274437692242927471137606015213542491815936000 |
7 | 1291851049702792234730057308758464452124128263449062932480000 |