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Number of (n+1) X 7 0..2 arrays with every 2 X 2 subblock having the same number of clockwise edge increases as its horizontal neighbors and the same number of counterclockwise edge increases as its vertical neighbors.

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`%I #7 Dec 10 2015 02:17:13
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`%S 218034,2554848,93488811,3820547082,157611325827,6566654061039,
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`%T 274342874332980,11488530154756449,481501347104927403,
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`%U 20193219305106753600,847089560605594813119,35541367887133558923699
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`%N Number of (n+1) X 7 0..2 arrays with every 2 X 2 subblock having the same number of clockwise edge increases as its horizontal neighbors and the same number of counterclockwise edge increases as its vertical neighbors.
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`%C Column 6 of A205917.
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`%H R. H. Hardin, <a href="/A205915/b205915.txt">Table of n, a(n) for n = 1..210</a>
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`%e Some solutions for n=4:
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`%e ..2..1..2..1..1..1..0....1..0..2..0..0..0..0....0..0..2..2..1..1..1
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`%e ..1..1..2..1..2..1..0....0..0..2..0..1..0..1....0..2..2..1..1..2..1
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`%e ..2..1..1..1..1..1..1....2..2..2..0..0..0..0....2..2..1..1..2..2..2
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`%e ..1..1..0..0..0..1..2....1..2..0..0..1..1..1....2..1..1..2..2..0..2
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`%e ..2..1..1..0..1..1..1....1..2..2..0..1..0..0....2..2..2..2..0..0..0
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`%K nonn
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`%O 1,1
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`%A _R. H. Hardin_, Feb 01 2012
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