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A295603
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Number of nX5 0..1 arrays with each 1 horizontally or vertically adjacent to 0, 2, 3 or 4 1s.
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1
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13, 132, 1425, 16340, 201602, 2594128, 34416318, 465449155, 6367873016, 87714252101, 1213023621452, 16813627618462, 233358837307365, 3241261100572837, 45039211440470945, 626000092576446308
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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 69 (see link above)
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EXAMPLE
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Some solutions for n=4
..0..0..0..1..0. .1..1..1..0..1. .1..0..0..0..0. .0..1..1..1..0
..1..1..1..0..1. .1..0..1..1..0. .0..1..0..0..0. .1..1..1..1..0
..1..1..1..1..0. .1..1..1..1..0. .1..0..0..1..0. .1..1..0..0..1
..1..1..1..1..0. .0..1..1..0..0. .0..1..0..0..1. .0..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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