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 | 4 |
5 | 10 |
6 | 40 |
7 | 210 |
8 | 6944 |
9 | 65520 |
10 | 640800 |
11 | 6837600 |
12 | 157375680 |
13 | 2741618880 |
14 | 45897895680 |
15 | 783559576800 |
16 | 18503310228480 |
17 | 440531086195200 |
18 | 10407471103411200 |
19 | 247739364392083200 |
20 | 6801330820818124800 |
21 | 198670207398879283200 |
22 | 5945924796494183424000 |