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A222674
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Number of nX3 0..3 arrays with no more than floor(nX3/2) elements unequal to at least one horizontal, diagonal or antidiagonal neighbor, with new values introduced in row major 0..3 order
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1
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1, 5, 11, 130, 670, 9587, 51055, 832433, 4403793, 76270010, 393405671, 7110030015, 35866532209, 668872050090, 3316350242047, 63280853470227, 309953030601699, 6011655335449938, 29208300615650596, 572992311551819596
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OFFSET
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1,2
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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....0..1..1....0..1..2....0..0..1....0..0..0....0..0..0....0..0..0
..0..0..0....1..1..1....1..1..1....0..0..0....0..0..0....0..0..1....1..0..0
..0..0..0....1..1..1....1..1..1....0..0..0....1..0..1....0..0..0....0..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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