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A300636
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Number of nX5 0..1 arrays with every element equal to 1, 2, 4 or 5 horizontally, vertically or antidiagonally adjacent elements, with upper left element zero.
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1
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3, 37, 91, 300, 1130, 4418, 17607, 71861, 297729, 1239693, 5164437, 21502279, 89761068, 375474518, 1571013994, 6575412382, 27531230134, 115292976778, 482850728454, 2022211948451, 8469339667129, 35472003909094, 148568669283182
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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..1..1..0. .0..1..1..1..0. .0..0..0..1..1. .0..0..1..0..0
..1..0..0..1..0. .0..1..1..0..1. .0..0..1..0..1. .0..1..1..1..0
..1..1..0..1..0. .1..0..1..0..1. .0..0..0..0..1. .1..1..0..1..1
..0..1..0..1..1. .1..0..0..1..0. .0..1..0..0..1. .0..1..0..0..0
..0..1..0..0..0. .1..1..1..0..0. .1..0..0..0..1. .0..1..1..1..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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