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) |
---|---|
1 | 1 |
2 | 6 |
3 | 66 |
4 | 12 |
5 | 8220 |
6 | 20 |
7 | 420 |
8 | 213080 |
9 | 17965080 |
10 | 153720 |
11 | 2320468920 |
12 | 14109480 |
13 | 412970037480 |
14 | 422245703880 |
15 | 430902992520 |
16 | 6076390320 |
17 | 516336630329520 |
18 | 161488607280 |
19 | 21362271268818480 |
20 | 866533600973040 |
21 | 97555876321904 |
22 | 186715152624 |
23 | 52866073370045936 |