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 | 2 |
1 | 6 |
2 | 210 |
3 | 3573570 |
4 | 64845819350301990 |
5 | 28695662573739152697846686144187168109530 |
6 | 1038300112150956151877699324649731518883355380534272386781875587619359740733888844803014212990 |