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 | 0 |
3 | 0 |
4 | 24 |
5 | 60 |
6 | 240 |
7 | 1260 |
8 | 169344 |
9 | 1693440 |
10 | 17150400 |
11 | 187941600 |
12 | 12778698240 |
13 | 271809457920 |
14 | 5031211086720 |
15 | 91848556800000 |
16 | 4643532967772160 |
17 | 154079136039628800 |
18 | 4367731446302515200 |
19 | 117143657916761548800 |
20 | 5457792037686441984000 |