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A186911
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Number of (n+2)X7 0..6 arrays with each 3X3 subblock having rows and columns in lexicographically nondecreasing order
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1
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319741716426, 52666517720011, 4805827783188400, 300268014063911584, 14077041692560748494, 522748636954347087650, 15954040054059557650482, 411179480114108991321807, 9138537360691131917393508
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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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FORMULA
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Polynomial of degree 107 in n, see link.
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EXAMPLE
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Some solutions for 4X7
..0..0..0..0..0..0..2....0..0..0..0..0..1..2....0..0..0..0..0..0..2
..0..0..0..0..0..0..3....0..0..0..0..0..2..3....0..0..0..0..0..1..4
..0..0..0..0..0..4..0....0..0..0..0..0..5..4....0..0..0..0..0..1..4
..0..0..0..0..0..5..2....0..0..0..0..0..5..5....0..0..0..0..0..6..3
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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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