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) |
---|---|
1 | 1 |
2 | 1 |
3 | 1 |
4 | 4 |
5 | 105 |
6 | 46200 |
7 | 730329600 |
8 | 976445416826880 |
9 | 253989513002664748108800 |
10 | 30302715258078626805231995747942400 |
11 | 3921367125196579314580337108803595790318851635200 |
12 | 1315258359298445647817718300301463137710018409451973278413455360000 |