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.
?PrimeQ], {n, 0, 2}] (* _Robert Price's wiki page.
?PrimeQ], {n, 0, 2}] (* _Robert Price has authored 0 sequences.