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A306050
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Number of nX5 0..1 arrays with every element unequal to 0, 1, 2, 3, 6 or 7 king-move adjacent elements, with upper left element zero.
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1
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16, 120, 439, 1962, 12349, 66149, 321707, 1803281, 9990733, 52730335, 286812695, 1572439123, 8496841932, 46112314659, 251332660149, 1365232944075, 7416321137104, 40346486920331, 219359763562029, 1192343008712225
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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 85 (see link above)
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EXAMPLE
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Some solutions for n=5
..0..1..0..1..1. .0..0..0..0..1. .0..1..1..1..1. .0..0..0..0..1
..1..1..0..0..1. .0..0..0..0..0. .0..0..1..0..0. .0..0..0..1..1
..1..1..1..1..1. .0..1..0..0..0. .1..1..1..0..1. .0..1..0..0..0
..1..1..1..1..1. .1..1..0..1..0. .1..1..1..1..1. .1..0..0..1..0
..1..1..1..1..1. .1..1..1..1..0. .0..1..1..1..1. .1..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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