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 A024510 #3 Mar 30 2012 18:55:55 %S A024510 2,5,7,9,11,14,15,17,20,22,23,24,27,29,31,32,35,37,39,40,43,44,48,49, %T A024510 51,53,54,58,60,61,63,64,65,68,70,72,74,76,78,82,83,87,88,90,91,93,95, %U A024510 97,99,102,103,104,107,108,109,112,115,116,118,120,122,125,126,128,131,132,135 %N A024510 Positions of even numbers in A004431 (sums of 2 distinct nonzero squares). %K A024510 nonn %O A024510 1,1 %A A024510 _Clark Kimberling_