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%I #5 Mar 31 2012 12:37:30
%S 397734,122871278,36572974507,11197401806412,3413352967754696,
%T 1043428174053823487,318751987571164698772,97407366419231553054246,
%U 29763727089493837413742773,9094996467359607511188778436
%N Half the number of (n+1)X6 0..3 arrays with every 2X2 subblock having exactly one duplicate clockwise edge difference
%C Column 5 of A209787
%H R. H. Hardin, <a href="/A209784/b209784.txt">Table of n, a(n) for n = 1..210</a>
%e Some solutions for n=4
%e ..3..1..0..0..2..3....1..0..0..1..0..3....1..1..3..2..3..0....1..2..1..3..2..1
%e ..0..2..2..1..1..3....2..2..1..1..0..3....1..2..2..2..3..3....3..0..3..3..1..1
%e ..0..1..1..1..2..3....1..3..1..2..0..3....3..0..1..2..1..1....1..2..1..3..3..3
%e ..2..1..0..2..2..1....3..3..3..2..0..3....1..2..1..2..0..0....3..2..1..3..1..3
%e ..3..1..2..2..1..1....2..1..1..1..3..3....0..2..0..0..0..1....1..1..1..2..1..1
%K nonn
%O 1,1
%A _R. H. Hardin_ Mar 13 2012
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