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 A259699 #11 Jul 10 2016 23:13:24 %S A259699 1,3,8,25,72,229,689,2222,6873 %N A259699 Erroneous version of A259700. %C A259699 Included in accordance with OEIS policy of including published but incorrect sequences to serve as pointers to the correct versions. %H A259699 Albert Sade, <a href="/A000108/a000108_17.pdf">Sur les Chevauchements des Permutations</a>, published by the author, Marseille, 1949. [Annotated scanned copy] %K A259699 dead %O A259699 2,2