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A297957
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Number of nX6 0..1 arrays with every element equal to 1, 2, 4 or 5 king-move adjacent elements, with upper left element zero.
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1
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5, 49, 109, 779, 2596, 11283, 61204, 284304, 1375342, 6952910, 34481150, 170526375, 851167905, 4246845842, 21142550887, 105387070394, 525656312520, 2620783997147, 13066690252443, 65162285094742, 324954134100762
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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=7
..0..0..0..1..0..0. .0..1..0..0..1..0. .0..0..0..0..0..1. .0..0..0..0..1..0
..0..1..0..1..0..1. .1..0..1..1..1..0. .1..1..1..1..1..0. .1..0..0..1..1..0
..1..1..0..0..1..0. .0..1..0..1..1..1. .0..1..1..0..1..1. .0..1..1..1..1..1
..0..0..0..1..1..1. .1..1..0..1..0..0. .0..1..0..0..1..1. .1..1..1..0..0..0
..1..0..1..1..0..0. .1..1..0..1..1..1. .1..1..1..1..1..0. .0..0..0..1..1..1
..0..1..0..1..0..1. .0..1..1..1..0..0. .0..0..1..0..1..0. .1..0..0..1..1..0
..1..1..0..1..1..1. .1..0..0..0..1..1. .1..1..0..1..0..1. .0..1..1..0..0..1
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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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