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%I #4 Dec 10 2015 07:51:50
%S 2,1354,927797,505822314,807767184602,938564405271330,
%T 1227457797882040471,1414459627698083569657,2816459153372415311863893,
%U 4797378178335553600403126383,9197263173294758529913861224297
%N Number of nX4 0..n*4-1 arrays with upper left zero and lower right n*4-1 and each element differing from its horizontal and antidiagonal neighbors by a power of two.
%C Column 4 of A265590.
%H R. H. Hardin, <a href="/A265587/b265587.txt">Table of n, a(n) for n = 1..94</a>
%e Some solutions for n=2
%e ..0..4..0..1....0..4..3..7....0..1..2..3....0..4..6..2....0..4..6..2
%e ..6..4..3..7....6..4..3..7....5..3..5..7....3..2..3..7....0..2..6..7
%Y Cf. A265590.
%K nonn
%O 1,1
%A _R. H. Hardin_, Dec 10 2015