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 | 2 |
2 | 288 |
3 | 12441600 |
4 | 421382062080000 |
5 | 23120161750363668480000000 |
6 | 3683853104727992382799761899520000000000 |
7 | 2777528195026874073410445622205453260145295360000000000000 |