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 | 0 |
2 | 2 |
3 | 6 |
4 | 84 |
5 | 720 |
6 | 12000 |
7 | 178920 |
8 | 3744720 |
9 | 79531200 |
10 | 2056652640 |
11 | 56284351200 |
12 | 1753673423040 |
13 | 58443081016320 |
14 | 2142625074670080 |
15 | 83948606126985600 |
16 | 3549356731374854400 |
17 | 159643527455123712000 |
18 | 7656564912324122995200 |