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.
%I A094050 #20 Feb 12 2023 13:39:18 %S A094050 1,1,2,24,1344,1128960 %N A094050 Duplicate of A000479. %Y A094050 Cf. A000479. %K A094050 dead %O A094050 1,3