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%I A186557 #5 Mar 31 2012 12:36:05
%S A186557 927477,783375343,663296784123,561714653720250,475681559860717916,
%T A186557 402827283017904807331,341131017852900112413067,
%U A186557 288884064380556803805427879,244639147969972250796140260427
%N A186557 Number of (n+1)X5 0..3 arrays with no 2X2 subblock commuting with any of its horizontal and vertical 2X2 subblock neighbors
%C A186557 Column 4 of A186558
%H A186557 R. H. Hardin, <a href="/A186557/b186557.txt">Table of n, a(n) for n = 1..13</a>
%e A186557 Some solutions for 3X5
%e A186557 ..0..0..0..0..1....0..0..0..2..3....2..0..3..2..3....2..0..3..2..1
%e A186557 ..2..0..2..0..0....2..0..2..0..3....2..0..2..0..3....2..0..2..3..2
%e A186557 ..0..0..2..1..2....0..0..1..0..3....0..0..2..2..1....0..0..1..3..3
%K A186557 nonn
%O A186557 1,1
%A A186557 _R. H. Hardin_ Feb 23 2011

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