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A283413
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Number of nX6 0..1 arrays with no 1 equal to more than three of its horizontal, vertical and antidiagonal neighbors.
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1
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64, 3525, 146228, 6865368, 315717408, 14511646624, 668024193788, 30738576483000, 1414483814666200, 65089911870493672, 2995215513526282140, 137829698528789894768, 6342456224329497452288, 291858373017140023742708
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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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FORMULA
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Empirical recurrence of order 72 (see link above)
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EXAMPLE
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Some solutions for n=3
..0..0..1..1..1..0. .0..1..1..0..1..0. .0..0..1..0..0..0. .0..1..1..1..1..0
..0..0..1..0..0..1. .0..0..1..0..1..0. .0..0..0..1..0..1. .1..0..0..0..1..0
..1..1..0..0..0..1. .1..1..0..1..0..0. .0..1..0..0..1..0. .1..1..0..0..0..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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