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 | 3 |
1 | -6 |
2 | 18 |
3 | -60 |
4 | 210 |
5 | -756 |
6 | 2772 |
7 | -10296 |
8 | 38610 |
9 | -145860 |
10 | 554268 |
11 | -2116296 |
12 | 8112462 |
13 | -31201644 |
14 | 120347532 |
15 | -465328200 |
16 | 1803025410 |
17 | -6999149124 |
18 | 27213719148 |
19 | -105960069864 |
20 | 413078158350 |
21 | -1612098272460 |
22 | 6297409350492 |
23 | -24620247483624 |
24 | 96324799842498 |
25 | -377102656201956 |
26 | 1477141800784668 |