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 A132663 #2 Mar 31 2012 10:32:01 %S A132663 1,1,2,3,3,4,4,5,5,5,6,5,7,7,7,6,8,8,7,9,7,8,9,10,9,10,8,11,11,11,11, %T A132663 12,11,10,11,12,13,13,13,10,13,12,13,14,11,13,13,11,15,15,13,15,13,16, %U A132663 12,13,15,14,16,15,17,17,17,17,13,17,14,18,16,17,15,18,17,19,14,17,18,16 %N A132663 Values of y such that x^2+y^2=n where x<=y for values of n given by A008784. %Y A132663 Cf. A008784 A132662. %K A132663 nonn %O A132663 1,3 %A A132663 _Colin Barker_, Aug 24 2007