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 | 21 |
2 | 960540 |
3 | 16418498901144294337512360 |
4 | 436066841882071117095002459324085167366543342937477344818646196279385305441506861017701946929489111120 |