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A303687
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Number of nX5 0..1 arrays with every element unequal to 2, 3 or 4 king-move adjacent elements, with upper left element zero.
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1
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0, 61, 27, 343, 349, 2809, 4619, 29475, 59695, 312565, 749915, 3414709, 9159379, 37886863, 109856087, 425475373, 1300509341, 4819052399, 15264319545, 54916710773, 178135150965, 628466577459, 2071027274837, 7212819961559
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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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FORMULA
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Empirical recurrence of order 93 (see link above)
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EXAMPLE
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Some solutions for n=5
..0..0..1..0..1. .0..1..1..0..1. .0..1..1..0..1. .0..1..0..0..1
..1..1..0..0..1. .1..0..1..1..0. .0..1..1..0..0. .0..1..1..0..0
..0..1..1..0..0. .0..0..0..1..1. .1..1..0..0..1. .1..0..1..1..0
..0..1..1..0..1. .1..0..0..0..1. .0..1..0..0..1. .0..0..0..1..1
..1..0..0..1..0. .0..1..0..1..0. .1..0..1..1..0. .1..0..1..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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