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%I #7 Dec 09 2015 13:47:19
%S 1,12,1030,298764,83948008,22511356876,10087240306899,
%T 3527678938392395,1384849739444093464,509526476766763110063,
%U 197694082692466208850553,132949897804861666617140704,58944850608913545191419115404
%N Number of (3n-2)X2 0..6n-5 arrays with upper left zero and lower right 6n-5 and each element differing from its horizontal, vertical and diagonal neighbors by a power of two.
%C Column 2 of A265494 (terms of the form 3n-2).
%H R. H. Hardin, <a href="/A265488/b265488.txt">Table of n, a(n) for n = 1..70</a>
%e Some solutions for n=2
%e ..0..1....0..4....0..1....0..1....0..4....0..4....0..4....0..1....0..4....0..4
%e ..1..2....4..2....1..2....4..2....1..2....4..2....4..2....4..2....1..2....4..2
%e ..5..3....5..6....5..3....5..3....5..3....5..3....5..6....5..6....5..3....5..3
%e ..3..7....3..7....6..7....6..7....6..7....3..7....6..7....3..7....3..7....6..7
%Y Cf. A265494.
%K nonn
%O 1,2
%A _R. H. Hardin_, Dec 09 2015
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