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A295415
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Number of nX7 0..1 arrays with each 1 horizontally or vertically adjacent to 1, 2 or 3 1s.
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1
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37, 5854, 457178, 37927609, 3232240913, 272714953724, 23025368248778, 1945003010538968, 164274708080518128, 13874595126484055272, 1171853104636801040141, 98975023815069258155234
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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=5
..0..0..0..0..1..0..0. .0..0..0..0..0..1..0. .0..0..0..0..1..1..0
..0..0..0..0..1..0..0. .0..0..0..0..1..1..0. .0..0..0..0..0..0..1
..0..0..0..0..0..0..0. .0..0..0..1..1..0..1. .0..0..0..0..1..1..1
..0..0..1..0..0..1..1. .0..0..1..0..1..1..1. .0..0..1..0..1..0..1
..0..0..1..0..0..0..1. .0..0..1..0..0..0..0. .0..0..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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