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 | 5 |
2 | -25 |
3 | 119 |
4 | -565 |
5 | 2675 |
6 | -12661 |
7 | 59915 |
8 | -283525 |
9 | 1341659 |
10 | -6348805 |
11 | 30042875 |
12 | -142164421 |
13 | 672729275 |
14 | -3183389125 |
15 | 15063959099 |
16 | -71283419845 |
17 | 337316764475 |
18 | -1596200067781 |
19 | 7553299819835 |
20 | -35742598512325 |
21 | 169135792154939 |
22 | -800359161855685 |
23 | 3787340218204475 |