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 A140591 #14 Aug 08 2019 06:41:39 %S A140591 0,1,1,0,0,1,0,0,0,1,0,1,1,0,0,0,0,1,0,1,0,0,1,0,0,1,1,1,0,0,0,0,0,1, %T A140591 0,1,0,1,1,0,1,0,0,1,0,0,1,1,1,0,1,1,0,0,0,1,1,1,1,0,0,0,0,0,0,1,0,1, %U A140591 0,1,0,0,1,0,1,0,0,1,0,1,1,0,1,1,0,0,0,1,0,1,1,0,1,1,0,0,0,1,0,0,1 %N A140591 Duplicate of A095901. %K A140591 dead %O A140591 0,1 %A A140591 _Roger L. Bagula_ and _Gary W. Adamson_, Jul 06 2008