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.
73 is the 141385th Sophie Germain prime. - _Bernard Schott's wiki page.
73 is the 141385th Sophie Germain prime. - _Bernard Schott has authored 0 sequences.