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A296597
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Number of nX6 0..1 arrays with each 1 horizontally, vertically or antidiagonally adjacent to 1, 2 or 3 neighboring 1s.
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1
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21, 1785, 58251, 2271055, 91004329, 3553672817, 139547279602, 5483284264255, 215325152512080, 8456644209542369, 332127680070833366, 13043925893565344468, 512285988066386259951, 20119470378862894580835
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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
..1..0..0..1..1..1. .0..1..1..1..0..1. .1..0..0..1..0..1. .0..1..1..0..1..1
..1..0..1..0..0..0. .0..1..0..0..0..1. .1..1..1..0..1..1. .1..0..1..0..0..1
..1..1..0..0..0..0. .0..1..1..1..0..0. .0..1..0..0..0..1. .0..0..1..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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