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 | 3 |
2 | 900 |
3 | 16464000 |
4 | 19061082810000 |
5 | 1438322180987553878016 |
6 | 7234500281404807826660044800000 |
7 | 2467969483765439710971533630106501120000000 |