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 A035030 #11 Jan 29 2019 09:29:50 %S A035030 7,13,103,487,547,823,967,1063,3187 %N A035030 Erroneous version of A323468. %C A035030 Included in accordance with OEIS policy of including published but erroneous sequences to serve as pointers to the correct values. %D A035030 S. K. Stein and S. Szabo, Algebra and Tiling, MAA Carus Monograph 25, 1994, page 77. %K A035030 dead %O A035030 1,1