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 A129971 #6 Mar 30 2012 16:50:41 %S A129971 1,4,9,1,4,9,16,4,9,16,9,16,1,4,9,16,4,9,16,25,9,16,25,16,4,9,16,9,16, %T A129971 25,16,25,9,16,16,25,1,4,9,16,4,9,16,25,9,16,25,16,25,4,9,16,25,9,16, %U A129971 25,36,16,25,36,25,9,16,25,16,25,36,25,16,25,4,9,16,9,16,25,16,25,36,9,16,25 %N A129971 a(n) = A129968(n)^2. %C A129971 Also a(n) = sum of digits of A129967(n)^2. %H A129971 T. D. Noe, <a href="/A129971/b129971.txt">Table of n, a(n) for n=1..5000</a> %K A129971 nonn,base %O A129971 1,2 %A A129971 _N. J. A. Sloane_, Jun 13 2007, Oct 07 2007