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 A024515 #3 Mar 30 2012 18:55:55 %S A024515 1,3,4,7,8,10,12,13,15,18,19,21,24,25,27,28,29,32,34,35,37,38,41,43, %T A024515 45,46,47,50,51,55,56,57,59,61,62,66,68,69,71,72,73,76,78,80,82,83,85, %U A024515 87,91,92,95,97,98,100,101,103,105,107,109,112,113,114,117,118,119,122,125,126 %N A024515 Positions of even numbers in A000404 (sums of 2 nonzero squares). %K A024515 nonn %O A024515 1,2 %A A024515 _Clark Kimberling_