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 | 1 |
2 | 4 |
3 | 510 |
4 | 6745200 |
5 | 19038823123320 |
6 | 19549762329157865925120 |
7 | 11131011767163918530071193512089600 |
8 | 4977434038774545402380656971924547417738384800000 |