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 A085636 #5 Feb 20 2005 03:00:00 %S A085636 1,7,33,185,553,1233,2321,3913,6105,8993,12673,17241,22793,29425, %T A085636 37233,46313,56761,68673,82145,97273,114153,132881,153553,176265, %U A085636 201113,228193,257601,289433,323785,360753,400433,442921,488313,536705 %N A085636 Erroneous version of A046142. %K A085636 dead %O A085636 1,2