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A233146
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Number of nX7 0..5 arrays with no element x(i,j) adjacent to value 5-x(i,j) horizontally, antidiagonally or vertically, 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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2136, 20726079, 231058112982, 2582927810338210, 28884899976580380572, 323040050513644831673711, 3612824935976380302597462081, 40405307424531049882937388071029, 451887251397949341093459133981852269
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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..0..2..4....0..0..0..1..5..2..1....0..0..0..1..2..5..4
..0..0..0..0..4..0..2....3..0..3..1..1..1..3....3..0..3..5..4..2..5
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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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