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A233891
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Number of (n+1)X(7+1) 0..6 arrays with every 2X2 subblock having the sum of the squares of the edge differences equal to 30, and no two adjacent values equal
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1
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161168, 5829956, 197246776, 8442821772, 317752132336, 13755592501748, 530020280813856, 22858877905193252, 889603831608487232, 38192457821678629076, 1495266348359989393168, 63945337592938269038024
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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..2..0..2..0..3..0..2....0..1..3..1..3..1..4..5....6..3..6..3..6..3..2..0
..4..5..1..5..4..2..4..1....3..5..6..2..6..2..6..2....2..1..2..1..2..1..5..4
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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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