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 | 4 |
2 | 12 |
3 | 132 |
4 | 17292 |
5 | 298995972 |
6 | 89398590973228812 |
7 | 7992108067998667938125889533702532 |
8 | 63873791370569400659097694858350356285036046451665934814399129508492 |