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 A132430 #26 Sep 04 2015 15:30:39 %S A132430 0,1,2,3,4,5,6,7,9,10,19,20,21,22,25,26,31,47,48,89,90,91,92,93,94,95 %N A132430 Duplicate of A049537. %K A132430 dead %O A132430 1,3 %A A132430 _Jonathan Vos Post_, Nov 13 2007