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 | 120 |
2 | 5040 |
3 | 479001600 |
4 | 6402373705728000 |
5 | 121645100408832000 |
6 | 2432902008176640000 |
7 | 1124000727777607680000 |
8 | 15511210043330985984000000 |
9 | 304888344611713860501504000000 |