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 | 6 |
4 | 24 |
5 | 60 |
6 | 840 |
7 | 15330 |
8 | 161616 |
9 | 1572984 |
10 | 29031120 |
11 | 636008670 |
12 | 11426850600 |
13 | 210095235636 |
14 | 5137568918664 |
15 | 139255673359530 |
16 | 3574532174656800 |
17 | 95923063388359920 |
18 | 2974073508961556256 |
19 | 98747639807081454774 |
20 | 3287535337205171488440 |