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.
)}1..4; my @list; for (1..$n) { push @list,$'s wiki page.
)}1..4; my @list; for (1..$n) { push @list,$ has authored 0 sequences.