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 | -2 |
2 | 0 |
3 | -42 |
4 | 86 |
5 | -1638 |
6 | 4116 |
7 | -76662 |
8 | 218592 |
9 | -3879766 |
10 | 11965072 |
11 | -205722702 |
12 | 672706566 |
13 | -11257625386 |
14 | 38520382716 |
15 | -630071416794 |
16 | 2236375718918 |
17 | -35864826630822 |
18 | 131232962248816 |
19 | -2068477295105214 |
20 | 7767014381299026 |
21 | -120556991420552658 |