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A297865
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Number of nX7 0..1 arrays with every element equal to 2, 3 or 4 king-move adjacent elements, with upper left element zero.
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1
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0, 54, 820, 5774, 174970, 3740362, 76517448, 1699781649, 36000744495, 782045113085, 16877012899377, 363771158498502, 7861206400229573, 169677704706722960, 3663241783403069590, 79092902173616439078
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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..0..1..1..1..0..0. .0..0..1..1..1..1..0. .0..0..0..0..1..1..0
..0..1..0..0..0..1..0. .0..1..1..0..1..0..0. .0..1..1..0..1..0..0
..0..1..1..0..1..1..1. .0..1..0..0..0..1..0. .0..1..1..0..1..0..0
..0..0..1..0..1..0..0. .0..1..1..0..1..1..0. .0..1..0..0..1..1..0
..0..1..1..0..0..0..0. .0..0..1..1..1..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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