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A267954
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Number of nX4 0..2 arrays with every repeated value in every row and column unequal to the previous repeated value, and new values introduced in row-major sequential order.
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1
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11, 726, 30145, 1414023, 56103165, 2290723921, 87407239371, 3343976341229, 124140022659137, 4592258225675297, 167435268977631221, 6080341495638232187, 219161395227799839753, 7874818737427465078729, 281806381317852982386447
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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=3
..0..1..0..2....0..0..1..0....0..1..2..0....0..1..2..0....0..1..0..1
..1..2..1..0....0..1..1..2....0..1..0..0....2..0..2..2....1..0..1..0
..1..2..1..2....1..2..0..1....1..0..2..1....1..0..0..1....1..0..1..1
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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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