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A305243
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Number of nX6 0..1 arrays with every element unequal to 0, 1, 2, 4 or 8 king-move adjacent elements, with upper left element zero.
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1
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32, 184, 158, 767, 3288, 12521, 55039, 238455, 1028982, 4474894, 19518559, 84942081, 370258428, 1613715073, 7033574315, 30657040705, 133631642692, 582478243133, 2538960848316, 11067063306710, 48240214387036
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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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FORMULA
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Empirical recurrence of order 98 (see link above)
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EXAMPLE
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Some solutions for n=5
..0..0..1..0..0..1. .0..0..0..0..1..1. .0..0..0..1..1..0. .0..0..0..0..0..0
..1..1..1..1..1..1. .0..0..0..0..0..0. .0..0..0..0..0..0. .0..0..0..0..1..1
..1..1..1..1..1..1. .0..0..0..0..0..0. .0..0..0..0..0..0. .1..0..1..1..1..1
..1..1..1..1..0..0. .0..0..1..0..0..1. .1..1..0..0..0..0. .0..1..1..1..1..0
..1..1..0..0..0..0. .0..0..0..0..1..0. .1..1..1..1..0..0. .1..1..1..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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