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 | -3 |
4 | 16 |
5 | 90 |
6 | -84 |
7 | -2940 |
8 | -8672 |
9 | 95256 |
10 | 956160 |
11 | -811800 |
12 | -75724296 |
13 | -419150160 |
14 | 4406562720 |
15 | 78306555600 |
16 | 89704074240 |
17 | -9655388184960 |
18 | -97621097227200 |
19 | 657339885653760 |
20 | 23680733504400000 |
21 | 119677890314505600 |
22 | -3528587069869276800 |
23 | -64401874868363598720 |