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.
] = 0; Scan[(e1[#[[1]]] = #[[2]])&, f1]; e2['s wiki page.
] = 0; Scan[(e1[#[[1]]] = #[[2]])&, f1]; e2[ has authored 0 sequences.