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 | 12 |
2 | 14515200 |
3 | 420505587390873600000 |
4 | 6848282921689337839624757371207680000000000 |
5 | 592617982969061328644755583860005865281724398591341934673920000000000000000 |