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 A153437 #11 Sep 26 2019 08:01:22 %S A153437 2,2,2,2,4,2,99,120,3,2,6,3,4,21,12,2,30,3,5,47,31,34,27,2,31,2,50,5, %T A153437 20,23,89,29,179,11,2,16,41,96,75,22,55,10,209,46,38,17,34,7,61,121 %N A153437 Erroneous version of A153436. %K A153437 dead %O A153437 1,1