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A298657
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Number of nX5 0..1 arrays with every element equal to 1, 2, 4, 6 or 7 king-move adjacent elements, with upper left element zero.
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1
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3, 23, 23, 85, 177, 431, 876, 2137, 5002, 11687, 27591, 64253, 150967, 353682, 830580, 1954490, 4575013, 10742553, 25221766, 59150366, 138829820, 325959550, 764905062, 1795278490, 4214144288, 9890202526, 23212413440, 54483362577
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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..1..0..1..1. .0..0..0..1..0. .0..0..0..1..1. .0..1..1..1..0
..1..0..1..0..0. .1..0..0..0..1. .1..0..0..0..0. .1..0..0..0..1
..0..1..0..1..0. .1..0..0..0..0. .1..0..0..1..1. .1..0..0..1..0
..1..0..1..0..0. .1..0..1..0..0. .0..0..0..1..0. .0..0..0..0..1
..0..1..0..1..1. .0..1..0..1..0. .1..1..1..0..1. .1..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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