%I
%S 7,22,45,103,193,421,777,1681,3097,6697,12345,26713,49273,106681,
%T 196857,426361,786937,1704697,3146745,6817273,12584953,27266041,
%U 50335737,109058041,201334777,436219897
%N 1/4 the number of n X n arrays of squares of integers with every 2X2 subblock summing to 27
%F Conjecture: G.f.: x^2*(78*x^4+32*x^3+19*x^215*x)/((x1)*(2*x+1)*(2*x1)*(2*x^21)) [From Maksym Voznyy (voznyy(AT)mail.ru), Jul 26 2009]
%K nonn
%O 2,1
%A _R. H. Hardin_ Apr 06 2009
