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A233237
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Number of nX6 0..5 arrays with no element x(i,j) adjacent to value 5-x(i,j) horizontally, diagonally or antidiagonally, top left element zero, and 1 appearing before 2 3 and 4, and 2 appearing before 3 in row major order
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1
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452, 1419889, 5267525102, 19645569858350, 73288254642491677, 273407904115337411320, 1019972250198681748495759, 3805096786515479736762977469, 14195250676420681381695428272598
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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
..0..0..0..1..2..2....0..0..0..1..2..1....0..0..1..2..4..3....0..0..1..5..4..5
..4..0..1..2..1..2....4..0..0..4..0..4....3..0..4..0..0..3....1..0..1..2..4..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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