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A295377
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Number of nX6 0..1 arrays with each 1 horizontally or vertically adjacent to 0, 2 or 4 1s.
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1
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21, 299, 4071, 55643, 761795, 10437240, 142860055, 1956512289, 26790134422, 366852068404, 5023461594972, 68788552129955, 941953214288271, 12898594994181355, 176626393130327608, 2418626153744793468
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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=4
..0..0..0..0..0..0. .0..0..0..1..0..0. .1..0..0..0..0..0. .0..1..0..1..1..0
..0..0..0..0..0..0. .0..0..0..0..0..0. .0..0..1..0..0..0. .1..0..1..1..1..0
..0..0..1..0..0..1. .1..0..1..0..1..0. .0..0..0..0..0..0. .0..0..1..1..0..0
..0..1..0..0..1..0. .0..1..0..1..0..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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