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A283383
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Number of nX5 0..1 arrays with no 1 equal to more than two of its horizontal, vertical and antidiagonal neighbors, with the exception of exactly two elements.
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1
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0, 91, 4420, 116624, 2993934, 71707838, 1644385909, 36631580212, 797807876394, 17071093013959, 360093050350939, 7506214481935722, 154911588816764077, 3169754325029230295, 64378159448861378436, 1299032728948862185980
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OFFSET
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1,2
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COMMENTS
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LINKS
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EXAMPLE
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Some solutions for n=4
..0..0..1..1..1. .0..0..0..0..0. .1..0..1..0..1. .0..0..1..0..0
..1..0..0..1..0. .1..0..1..0..1. .0..0..1..0..1. .1..0..1..1..1
..0..0..0..1..0. .0..0..1..1..1. .0..1..0..1..0. .0..0..0..1..0
..0..1..0..1..0. .0..0..1..0..0. .1..0..1..1..1. .1..1..1..0..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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