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+1,n+1}, k=0,1,..., where X's wiki page.
{n+1,n+1}, k=0,1,..., where X has authored 0 sequences.