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A297304
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Number of 7Xn 0..1 arrays with every 1 horizontally or antidiagonally adjacent to 2 neighboring 1s.
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1
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1, 1, 21, 69, 266, 1574, 13504, 93906, 551477, 3159693, 18792129, 113862870, 692747205, 4226551294, 25828653795, 157805371000, 963306137176, 5876339680839, 35834865220658, 218515617055715, 1332575380148292
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OFFSET
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1,3
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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..1..1..0..0. .0..0..1..1..0. .0..0..0..1..1. .0..0..0..0..0
..1..1..0..0..0. .0..1..1..0..0. .0..0..1..1..0. .0..1..1..0..0
..0..0..0..0..0. .0..0..1..1..1. .0..0..0..0..0. .1..1..0..0..0
..0..0..0..0..0. .0..1..0..1..1. .0..1..1..0..0. .0..1..1..0..0
..0..0..0..0..0. .1..1..0..1..0. .1..1..0..1..1. .1..1..0..0..0
..0..0..0..1..1. .1..1..1..0..0. .0..0..1..1..0. .0..1..1..0..0
..0..0..1..1..0. .0..0..0..0..0. .0..0..0..0..0. .1..1..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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