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A318420
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Number of nX5 0..1 arrays with every element unequal to 0, 2, 3 or 6 horizontally, vertically or antidiagonally adjacent elements, with upper left element zero.
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1
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1, 5, 5, 71, 129, 280, 839, 2717, 8803, 25414, 74518, 227494, 702137, 2143691, 6482983, 19639879, 59787428, 182279554, 554882961, 1687253474, 5131113671, 15614188211, 47523441803, 144618256222, 440018989420, 1338830460614
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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=5
..0..1..1..0..0. .0..0..0..1..0. .0..1..0..1..1. .0..0..1..0..0
..1..0..1..1..1. .0..0..1..1..0. .1..0..0..1..1. .0..1..1..0..0
..1..1..0..1..0. .0..1..1..1..1. .0..1..0..1..1. .1..0..1..1..1
..0..1..1..0..0. .1..1..1..0..1. .0..0..0..0..0. .1..1..1..0..1
..0..1..0..0..0. .0..0..1..1..0. .1..1..1..0..1. .0..0..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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