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%I #4 Dec 10 2015 12:34:59
%S 2,908,392320,36820624,283374980138,281538588667512,
%T 353827263949405920,425853730907471177448,889897682364060288415454,
%U 1489134329684078361665704606,2987652891220714880029028729466
%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 diagonal neighbors by a power of two.
%C Column 4 of A265619.
%H R. H. Hardin, <a href="/A265617/b265617.txt">Table of n, a(n) for n = 1..24</a>
%e Some solutions for n=2
%e ..0..4..3..1....0..2..6..2....0..4..6..2....0..4..3..4....0..1..3..1
%e ..6..4..6..7....3..1..3..7....0..2..3..7....3..2..3..7....3..1..3..7
%Y Cf. A265619.
%K nonn
%O 1,1
%A _R. H. Hardin_, Dec 10 2015
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