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 A165923 #3 Mar 30 2012 17:34:11 %S A165923 0,0,0,0,4,4,4,4,4,13,13,13,25,21,13,13,37,29,29,29,47,61,67,41,53,66, %T A165923 54,62,126,78,128,54,93,112,54,82,157,162,129,134,208,136,154,122,130, %U A165923 211,239,90,192,207,157,239,327,286,248,251,290,362,319,248,459 %N A165923 a(n) = sum of the square-full quadratic residues of n. %H A165923 C. H. Gribble, <a href="/A165923/b165923.txt">Table of n, a(n) for n=1,...,1000</a>. %Y A165923 Cf: A165919 %K A165923 nonn %O A165923 1,5 %A A165923 _Christopher Hunt Gribble_, Sep 30 2009