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A297717
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Number of nX5 0..1 arrays with every 1 horizontally, diagonally or antidiagonally adjacent to 1, 2 or 4 neighboring 1s.
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1
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12, 258, 2717, 36981, 512354, 6812856, 91994155, 1242370107, 16741579726, 225799768740, 3045362800259, 41068189990009, 553851481354328, 7469298996031612, 100731170465697137, 1358466913972452523
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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 87 (see link above)
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EXAMPLE
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Some solutions for n=4
..0..1..0..0..0. .1..0..0..1..1. .1..1..0..0..1. .0..0..0..1..1
..0..1..1..0..0. .0..1..0..0..0. .1..1..0..1..0. .0..0..0..0..1
..0..1..0..1..1. .0..0..0..1..1. .0..0..0..1..1. .0..0..0..1..1
..0..0..1..0..1. .1..1..1..0..0. .0..0..0..0..0. .0..0..0..1..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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