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.
5F_4[-2n,-2n,-2n,-2n,-2n 1,1,1,1 ; 1]". - _Michael Somos's wiki page.
5F_4[-2n,-2n,-2n,-2n,-2n 1,1,1,1 ; 1]". - _Michael Somos has authored 0 sequences.