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 A203023 #15 May 19 2014 15:04:33 %S A203023 1,6,156,305,484,1219,322733,14343797,58460571,68355787 %N A203023 Integers n dividing A000041(n)+1. %C A203023 No other terms below 10^8. %Y A203023 Cf. A093952, A051177, A128836, A121015 %K A203023 nonn,more %O A203023 1,2 %A A203023 _Max Alekseyev_, Dec 27 2011