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A295050
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Number of nX7 0..1 arrays with each 1 horizontally or vertically adjacent to 0 or 2 1s.
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1
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34, 747, 14691, 301306, 6171389, 125887202, 2573527520, 52573942625, 1074298644657, 21950201753662, 448510802455457, 9164288736541756, 187252966893295656, 3826106452646843405, 78178286183064352980
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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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EXAMPLE
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Some solutions for n=3
..0..0..0..1..0..0..0. .0..0..0..1..0..0..1. .1..0..0..0..1..1..1
..1..0..1..0..0..0..0. .1..0..0..0..0..0..0. .0..0..0..0..1..0..1
..0..0..0..0..1..0..0. .0..0..1..0..1..0..1. .0..1..0..0..1..1..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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