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%I
%S 399930,152153160,53888573444,19391662870652,6954596004028468,
%T 2497054784947973388,896278100477366851795,321743305461455008300382,
%U 115494087693753318505527463,41458747023669964452852387044
%N Half the number of (n+1)X6 0..3 arrays with every 2X2 subblock having two or four distinct clockwise edge differences
%C Column 5 of A209913
%H R. H. Hardin, <a href="/A209910/b209910.txt">Table of n, a(n) for n = 1..210</a>
%e Some solutions for n=4
%e ..3..1..3..1..0..0....2..2..3..1..1..2....1..0..0..1..0..3....1..2..1..3..2..1
%e ..3..0..1..2..1..3....3..0..3..0..3..1....2..1..3..0..1..3....3..1..3..1..0..2
%e ..1..1..3..1..3..2....0..1..1..1..1..2....1..3..0..1..0..1....1..0..3..0..3..3
%e ..0..3..0..0..1..0....2..3..0..3..0..3....3..2..3..1..3..2....3..2..2..3..1..0
%e ..1..2..2..3..3..2....0..0..3..0..3..2....2..1..2..3..2..0....0..0..3..0..3..0
%K nonn
%O 1,1
%A _R. H. Hardin_ Mar 15 2012
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