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A298145
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Number of nX7 0..1 arrays with every element equal to 2, 3, 6 or 7 king-move adjacent elements, with upper left element zero.
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1
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0, 22, 8, 43, 73, 161, 180, 544, 1076, 2574, 5208, 11862, 27724, 63854, 146389, 334035, 776137, 1801528, 4174743, 9665985, 22409640, 52068197, 120962558, 281027721, 652954484, 1517843079, 3529411760, 8207419347, 19087389894, 44394830483
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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=7
..0..0..1..1..1..0..0. .0..0..0..0..0..1..1. .0..0..1..0..1..1..1
..0..1..0..0..0..1..0. .0..1..1..1..1..0..1. .0..1..0..1..0..0..1
..0..1..1..0..1..1..0. .1..0..0..0..0..0..1. .0..1..0..1..0..1..0
..1..0..0..0..0..0..1. .0..1..1..1..1..1..0. .0..1..0..1..0..1..0
..0..1..1..1..1..1..0. .1..0..0..0..0..0..1. .0..1..0..1..0..1..0
..0..1..0..0..0..1..0. .0..1..1..1..0..1..1. .0..1..0..1..0..1..0
..0..0..1..1..1..0..0. .0..0..1..0..0..0..1. .0..0..1..0..1..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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