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] - 1, {n, 2, 94}]] (* _Jayanta Basu's wiki page.
?PrimeQ] - 1, {n, 2, 94}]] (* _Jayanta Basu has authored 0 sequences.