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A300543
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Number of nX5 0..1 arrays with every element equal to 1, 2, 3 or 4 horizontally, vertically or antidiagonally adjacent elements, with upper left element zero.
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1
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3, 129, 2879, 61561, 1338834, 29114990, 632777378, 13752553340, 298894998879, 6496115080739, 141185007792788, 3068481262669872, 66689639658671547, 1449416716033629216, 31501277073963713498, 684641239698193508103
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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=5
..0..0..0..0..0. .0..0..0..0..0. .0..0..0..0..0. .0..0..0..0..0
..1..0..1..1..0. .0..0..0..1..1. .0..0..1..1..1. .0..1..1..1..0
..1..0..0..0..1. .1..1..0..0..0. .0..1..0..1..1. .0..0..0..1..0
..0..0..0..1..1. .1..0..0..1..1. .0..0..0..1..0. .1..1..1..1..1
..1..1..0..0..0. .1..1..1..0..0. .1..1..0..0..0. .0..0..1..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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