%I #4 Mar 31 2012 12:35:54

%S 225,43947,8538066,1661285961,323115202755,62851591581012,

%T 12225396762980829,2378005715920214025,462553489019014423650,

%U 89972804578123532061801,17500904466916598194011543

%N 1/256 the number of (n+1)X4 0..3 arrays with no 2X2 subblock being a reflection across the shared element pair of any horizontal or vertical neighbor

%C Column 3 of A183827

%e Some solutions with upper left block zero for 3X4

%e..0..0..2..1....0..0..2..3....0..0..3..3....0..0..2..0....0..0..3..0

%e..0..0..0..0....0..0..3..2....0..0..3..0....0..0..1..3....0..0..3..2

%e..2..3..1..0....3..1..0..1....2..1..2..3....3..3..2..2....0..3..0..3

%K nonn

%O 1,1

%A _R. H. Hardin_ Jan 07 2011