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 | 0 |
3 | 0 |
4 | 24 |
5 | 60 |
6 | 120 |
7 | 210 |
8 | 201936 |
9 | 1996344 |
10 | 12701520 |
11 | 64865790 |
12 | 17053788840 |
13 | 374788816116 |
14 | 4944496679304 |
15 | 50034166184730 |
16 | 6390396135006240 |
17 | 239770550508132720 |
18 | 5363062998193560096 |
19 | 89908444484550625014 |
20 | 7402557588108228698040 |