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A263798
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Number of (n+1)X(7+1) 0..1 arrays with each row and column divisible by 3, read as a binary number with top and left being the most significant bits, and rows and columns lexicographically nonincreasing
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1
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5, 5, 25, 56, 494, 4991, 62904, 760671, 8468941, 90476206, 850301770, 7703098612, 62160939006, 482749236704, 3416830587073, 23238401292501, 146883022822593, 892090634118666, 5108443008090443, 28144017611172958, 147708619212786406
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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
..1..1..1..1..0..0..0..0....1..1..1..1..0..0..0..0....1..1..1..1..1..1..0..0
..1..1..0..0..1..1..0..0....1..1..0..0..1..1..0..0....1..1..1..1..0..0..1..1
..1..0..1..0..1..1..1..0....1..0..1..0..1..0..1..1....1..1..0..0..1..1..1..1
..1..0..0..1..0..0..0..0....1..0..0..1..0..0..1..1....1..1..0..0..0..0..0..0
..0..1..1..0..1..0..0..1....0..0..1..0..0..1..1..1....0..0..0..0..1..1..1..1
..0..1..0..0..1..0..1..1....0..0..0..0..0..0..1..1....0..0..0..0..0..0..1..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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