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A317123
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Number of nX6 0..1 arrays with every element unequal to 0, 1, 2, 3, 5, 7 or 8 king-move adjacent elements, with upper left element zero.
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1
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32, 569, 4561, 46955, 507378, 5694906, 64566869, 734571604, 8373046468, 95512011523, 1089830833984, 12436698688960, 141929215105534, 1619742780936473, 18485182531732426, 210961212697095730
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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..1..1..1. .0..1..0..0..0..0. .0..1..1..0..1..1. .0..0..0..0..0..0
..0..0..0..1..1..1. .0..0..0..0..0..1. .0..1..0..1..0..0. .0..0..1..1..0..0
..0..0..0..1..1..0. .0..1..0..1..0..0. .0..0..1..0..0..0. .0..0..0..0..0..0
..0..1..1..1..0..0. .0..0..0..0..0..0. .0..0..1..0..0..0. .1..0..1..0..0..0
..0..1..1..1..1..0. .0..1..0..0..1..0. .0..0..0..0..0..1. .0..0..0..0..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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