|
%I #4 Dec 18 2015 18:17:19
%S 7,24,53,135,265,621,1169,2649,4897,10929,20033,44385,81025,178881,
%T 325889,718209,1307137,2878209,5235713,11523585,20957185,46115841,
%U 83857409,184506369,335486977
%N 1/4 the number of n X n arrays of squares of integers with every 2X2 subblock summing to 25
%F Conjecture: G.f.: x^2*(-7-12*x^4+20*x^3+13*x^2-17*x)/((x-1)*(2*x+1)*(2*x-1)*(2*x^2-1)) [From Maksym Voznyy (voznyy(AT)mail.ru), Jul 26 2009]
%K nonn
%O 2,1
%A _R. H. Hardin_ Apr 06 2009
|
