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 | 0 |
1 | 0 |
2 | 0 |
3 | 0 |
4 | 12 |
5 | 60 |
6 | 300 |
7 | 1260 |
8 | 5096 |
9 | 19656 |
10 | 73800 |
11 | 270600 |
12 | 974292 |
13 | 3454308 |
14 | 12090260 |
15 | 41850900 |
16 | 143489040 |
17 | 487862736 |
18 | 1646537040 |
19 | 5520741840 |
20 | 18402473180 |
21 | 61018726860 |
22 | 201361799100 |
23 | 661617339900 |
24 | 2165293112952 |
25 | 7060738411800 |
26 | 22947399839000 |
27 | 74349575478360 |
28 | 240206320776996 |
29 | 773998144725876 |