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A305640
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Number of nX6 0..1 arrays with every element unequal to 0, 1, 2, 4, 5 or 6 king-move adjacent elements, with upper left element zero.
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1
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32, 284, 743, 6329, 48567, 385282, 3252937, 29925524, 280854245, 2612768319, 24785851660, 236772462876, 2251291660203, 21530551123401, 206148758486168, 1970437000025705, 18871772494554514, 180748165315349147
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OFFSET
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1,1
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COMMENTS
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Column 6 of A305642.
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LINKS
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R. H. Hardin, Table of n, a(n) for n = 1..210
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EXAMPLE
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Some solutions for n=5
..0..0..1..0..0..0. .0..1..1..1..1..1. .0..1..1..1..0..1. .0..0..0..0..1..1
..0..0..1..0..0..1. .0..1..1..0..0..1. .0..1..1..1..1..1. .0..0..1..1..1..1
..1..1..1..0..1..0. .1..1..1..0..1..0. .1..1..1..1..1..0. .0..0..1..1..1..1
..0..0..0..1..0..0. .0..1..1..1..1..1. .1..1..1..1..1..0. .0..1..1..1..1..0
..0..0..1..0..0..0. .1..1..1..1..1..1. .1..1..1..1..1..1. .1..0..1..1..0..1
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CROSSREFS
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Cf. A305642.
Sequence in context: A009526 A304345 A316216 * A317034 A305909 A317151
Adjacent sequences: A305637 A305638 A305639 * A305641 A305642 A305643
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KEYWORD
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nonn
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AUTHOR
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R. H. Hardin, Jun 07 2018
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STATUS
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approved
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