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A305346
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Number of nX7 0..1 arrays with every element unequal to 0, 1, 3, 5 or 8 king-move adjacent elements, with upper left element zero.
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1
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21, 237, 245, 1074, 4685, 17054, 64658, 259281, 981360, 3731097, 14545752, 55903882, 213884003, 825770439, 3180306376, 12211473431, 47015069105, 181022736584, 696091000166, 2678377345408, 10308709813612, 39659264124397
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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..0..0..0..0..0..0. .0..1..1..1..1..1..1. .0..0..0..0..0..0..1
..0..0..1..0..0..0..1. .1..1..1..1..1..1..1. .0..0..0..0..0..0..0
..0..0..0..0..0..0..0. .1..1..1..1..1..0..1. .0..0..0..0..0..0..0
..0..0..0..0..0..0..0. .1..1..1..1..0..0..0. .0..0..0..0..0..1..0
..0..0..1..0..0..1..0. .1..0..1..1..1..0..0. .0..1..0..0..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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