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A251497
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Number of (n+1) X (6+1) 0..3 arrays with every 2 X 2 subblock summing to 4 5 6 7 or 8.
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1
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51474508, 195351371872, 761894242946484, 2987170312757672908, 11724359174003264630400, 46027674099447532469280380, 180705599017375127320670453920, 709462514504983014544616127594356
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OFFSET
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1,1
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COMMENTS
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LINKS
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EXAMPLE
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Some solutions for n=1
..0..0..2..0..3..3..1....0..0..2..0..2..0..0....0..0..0..2..2..1..0
..2..2..2..0..2..0..2....3..2..2..0..2..1..3....2..2..2..3..1..3..1
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CROSSREFS
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KEYWORD
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nonn
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AUTHOR
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STATUS
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approved
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