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A283662
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Number of nX4 0..1 arrays with no element unequal to more than four of its king-move neighbors, with the exception of exactly two elements, and with new values introduced in order 0 sequentially upwards.
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1
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0, 0, 403, 11886, 165152, 1712052, 15351085, 126810474, 989755263, 7421134282, 53972500634, 383258656118, 2669593728208, 18301919622500, 123810569805676, 828107771754630, 5484831030514008, 36019172324299540, 234771330638001725
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OFFSET
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1,3
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COMMENTS
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LINKS
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FORMULA
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Empirical recurrence of order 84 (see link above)
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EXAMPLE
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Some solutions for n=4
..0..0..1..0. .0..1..1..0. .0..0..0..0. .0..1..0..0. .0..1..0..1
..0..1..0..0. .1..1..0..0. .0..1..1..0. .0..1..0..0. .0..1..1..1
..1..0..1..0. .1..1..0..1. .0..0..0..1. .0..1..1..1. .1..0..0..0
..0..0..1..0. .1..1..1..0. .0..0..1..0. .1..0..1..1. .1..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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