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A233661
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Number of (n+1)X(3+1) 0..6 arrays with every 2X2 subblock having the sum of the squares of the edge differences equal to 26
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1
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6656, 56212, 501200, 5005852, 50997688, 538751292, 5717710176, 61553770120, 662422496208, 7175663136164, 77612411324720, 842364340920784, 9128887620954704, 99132686202841220, 1075213139367059160
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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=2
..3..2..2..2....2..4..2..4....0..0..0..4....0..2..0..3....1..3..1..1
..3..6..3..6....5..2..5..2....1..4..3..3....2..5..2..5....4..6..4..0
..1..3..5..3....5..6..6..6....0..0..0..4....6..6..6..5....6..3..1..0
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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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