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A252914
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Number of (n+2)X(2+2) 0..3 arrays with every consecutive three elements in every row having 2 or 3 distinct values, in every column 1 or 2 distinct values, in every diagonal 2 distinct values, and in every antidiagonal 2 distinct values, and new values 0 upwards introduced in row major order
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1
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8151, 52962, 418853, 3590945, 31484714, 273765237, 2405660944, 21164695786, 186324939058, 1640640634361, 14450504045197, 127278770331292, 1121132081874962, 9875584505122042, 86991091605489586, 766280168473793192
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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..1..0..1....0..1..1..2....0..1..2..1....0..1..2..0....0..1..1..2
..2..1..1..2....0..1..1..3....1..0..1..1....1..0..1..0....0..1..1..0
..0..2..1..2....2..1..1..3....0..0..1..0....0..1..1..2....0..1..1..0
..2..1..3..0....2..1..0..2....0..0..1..1....0..0..3..0....2..0..1..2
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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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