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A305044
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Number of nX5 0..1 arrays with every element unequal to 0, 2, 3, 6 or 7 king-move adjacent elements, with upper left element zero.
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2
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1, 26, 15, 20, 55, 201, 337, 1359, 5918, 13840, 50917, 214418, 640869, 2276124, 8928543, 29953696, 106456744, 399005390, 1401253518, 5009804395, 18368049681, 65601194194, 235509869390, 855175501812, 3072957989537, 11056497704449
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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=5
..0..1..1..0..1. .0..0..0..1..0. .0..1..1..0..0. .0..1..0..0..1
..1..0..1..0..0. .0..0..0..1..1. .1..1..0..1..1. .1..1..0..1..0
..0..1..1..1..1. .0..0..0..0..0. .1..0..1..1..1. .0..0..0..0..0
..0..1..1..1..1. .1..1..0..0..0. .0..1..1..0..0. .0..0..0..1..1
..0..1..1..1..1. .0..1..0..0..0. .0..1..1..0..1. .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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