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 A024511 #3 Mar 30 2012 18:55:55 %S A024511 1,3,4,6,8,10,12,13,16,18,19,21,25,26,28,30,33,34,36,38,41,42,45,46, %T A024511 47,50,52,55,56,57,59,62,66,67,69,71,73,75,77,79,80,81,84,85,86,89,92, %U A024511 94,96,98,100,101,105,106,110,111,113,114,117,119,121,123,124,127,129,130,133 %N A024511 Positions of odd numbers in A004431 (sums of 2 distinct nonzero squares). %K A024511 nonn %O A024511 1,2 %A A024511 _Clark Kimberling_