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A297991
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Number of nX6 0..1 arrays with every element equal to 1, 2, 3 or 6 king-move adjacent elements, with upper left element zero.
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1
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5, 573, 1274, 4648, 18189, 74675, 290466, 1134198, 4475863, 17501388, 68447326, 268885391, 1056650444, 4151346258, 16317217303, 64161745436, 252378618258, 993086741498, 3908970841059, 15390703083981, 60613211125295
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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=6
..0..1..0..1..1..0. .0..1..1..0..0..0. .0..0..0..1..0..0. .0..0..1..0..1..1
..1..0..1..0..1..0. .0..1..0..1..0..1. .1..1..1..0..1..0. .1..0..1..0..1..0
..1..0..1..0..1..0. .0..1..0..1..1..1. .0..0..1..0..1..1. .1..0..1..0..0..0
..0..0..1..0..1..0. .1..1..0..1..0..1. .1..0..1..0..0..1. .1..0..1..0..1..0
..1..0..1..0..1..1. .0..0..0..1..0..1. .1..0..1..1..1..0. .0..0..1..0..1..0
..1..1..0..1..0..0. .1..1..1..1..0..1. .1..0..0..0..0..0. .1..1..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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