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A304924
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Number of nX6 0..1 arrays with every element unequal to 0, 1, 2, 5 or 7 king-move adjacent elements, with upper left element zero.
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1
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32, 45, 191, 851, 4186, 21214, 104451, 524286, 2629697, 13159898, 65909764, 330440822, 1656131806, 8296998329, 41578385218, 208385151369, 1044232898642, 5232702674950, 26223139428812, 131412249840686, 658531778389885
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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 96 (see link above)
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EXAMPLE
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Some solutions for n=5
..0..1..0..0..0..1. .0..0..1..1..1..1. .0..0..0..0..1..0. .0..1..0..0..1..0
..0..0..0..0..1..0. .0..0..1..1..0..1. .0..0..0..0..0..0. .0..0..0..0..0..0
..0..0..1..0..0..0. .1..1..1..1..0..1. .1..0..0..0..0..1. .0..0..1..0..0..0
..0..1..0..0..0..0. .1..1..1..1..1..1. .0..0..1..1..0..0. .1..0..0..1..0..0
..0..0..0..0..1..0. .1..1..1..1..1..1. .0..0..0..0..0..0. .0..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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