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 | 4 |
3 | 0 |
4 | 20 |
5 | 0 |
6 | 84 |
7 | 0 |
8 | 340 |
9 | 0 |
10 | 1364 |
11 | 0 |
12 | 5460 |
13 | 0 |
14 | 21844 |
15 | 0 |
16 | 87380 |
17 | 0 |
18 | 349524 |
19 | 0 |
20 | 1398100 |
21 | 0 |
22 | 5592404 |
23 | 0 |
24 | 22369620 |
25 | 0 |
26 | 89478484 |
27 | 0 |
28 | 357913940 |
29 | 0 |
30 | 1431655764 |
31 | 0 |
32 | 5726623060 |
33 | 0 |
34 | 22906492244 |
35 | 0 |
36 | 91625968980 |
37 | 0 |
38 | 366503875924 |
39 | 0 |
40 | 1466015503700 |
41 | 0 |
42 | 5864062014804 |