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A295780
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Number of nX7 0..1 arrays with each 1 adjacent to 0 or 2 king-move neighboring 1s.
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1
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34, 739, 7479, 127731, 1905471, 27085621, 409525082, 6037613762, 89072774496, 1321788634101, 19544371605946, 289230460757404, 4281937924123280, 63365816364621759, 937874156712320997, 13881506306783920348
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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 91 (see link above)
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EXAMPLE
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Some solutions for n=4
..0..0..0..1..0..1..0. .0..0..1..0..0..0..1. .1..0..0..0..1..0..0
..0..1..0..0..0..0..0. .0..0..1..1..0..0..0. .0..0..1..0..1..1..0
..1..1..0..0..0..0..1. .0..0..0..0..0..1..1. .0..0..0..0..0..0..0
..0..0..0..0..1..0..0. .1..0..1..0..0..1..0. .0..0..0..0..0..0..1
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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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