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) |
---|---|
2 | 21 |
3 | 504 |
4 | 39648 |
5 | 6930 |
6 | 12669125245488 |
7 | 471771076278370 |
8 | 32818036405994618064 |
9 | 71577732779401085355729600 |
10 | 204945946670840805166309694624676331385919836360545974559162291811394735721440 |