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A233916
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Number of (n+1)X(7+1) 0..7 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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559736, 28936484, 1317291048, 76393662524, 3816435022128, 224247343748408, 11458028594887856, 672061212550600320, 34642386448309478976, 2024556302397626065444, 104880714157688434998824
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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
..6..2..0..2..3..2..6..2....6..2..3..6..3..5..3..2....4..1..4..1..4..5..1..5
..4..5..1..5..7..5..4..1....4..5..7..5..7..4..0..4....6..2..0..2..0..3..0..3
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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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