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A196652
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Number of nX7 0..4 arrays with each element x equal to the number its horizontal and vertical neighbors equal to 3,4,0,2,1 for x=0,1,2,3,4
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1
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13, 275, 2178, 37661, 689313, 10183698, 163282859, 2644969245, 42258577643, 676570815905, 10841400740070, 173671897740728, 2782146287996664, 44567043932430607, 713930349360876103, 11436736386929595699
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OFFSET
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1,1
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COMMENTS
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Every 0 is next to 0 3's, every 1 is next to 1 4's, every 2 is next to 2 0's, every 3 is next to 3 2's, every 4 is next to 4 1's
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LINKS
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EXAMPLE
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Some solutions for n=4
..0..2..2..0..2..0..2....0..0..1..0..0..0..2....0..0..0..0..2..0..0
..0..0..0..2..2..0..0....0..1..4..1..2..0..0....0..0..0..2..1..2..0
..0..0..0..2..0..2..2....0..2..1..0..2..0..0....2..2..0..1..4..1..0
..0..0..0..2..0..2..0....2..0..0..2..3..2..0....0..2..0..0..1..0..2
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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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