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 | 20 |
3 | 1640 |
4 | 901424 |
5 | 1333386848 |
6 | 9762556479680 |
7 | 552311189659544960 |
8 | 178664076508334107310336 |
9 | 177339376736100844376103875072 |
10 | 928195308949863753322027981355832320 |
11 | 37279296908672313898400994512625009709475840 |