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A229379
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Number of nX7 0..2 arrays avoiding 11 horizontally, 22 vertically and 00 diagonally or antidiagonally
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1
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1224, 36374, 2486980, 138118032, 8454015792, 492938029980, 29757371834046, 1753378119210848, 105365264675732262, 6236225995970496338, 373776319178643511574, 22179629928239882354518, 1327081034442636655221164
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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..1..0..1..0..0....0..0..0..1..2..0..1....0..0..1..0..1..0..2
..1..2..2..1..2..1..2....1..2..2..2..1..2..1....1..2..1..2..1..0..1
..0..1..0..1..0..2..0....2..0..0..0..0..1..0....2..0..2..0..1..2..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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