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 | 2 |
2 | 129600 |
3 | 50759843097600 |
4 | 129182006871144805294080000 |
5 | 2154683673871373733440812330742751559680000 |
6 | 235766858527753399707968381023024646011879419539171573760000000 |