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 | 240 |
2 | 122522400 |
3 | 137932073613734400 |
4 | 342696507457909818131702784000 |
5 | 1879127177606120717127879344567470740879360000 |
6 | 22740756589119797763590969093409514524935686067027158720512000000 |