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A196956
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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 2,1,3,4,0 for x=0,1,2,3,4
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1
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13, 178, 2987, 78717, 1918608, 46887039, 1147966466, 28133304588, 688970472958, 16871844816740, 413232005901840, 10120704139954048, 247866954036866195, 6070590513451031047, 148677076483267579402, 3641296772946640910171
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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 2's, every 1 is next to 1 1's, every 2 is next to 2 3's, every 3 is next to 3 4's, every 4 is next to 4 0's
Column 7 of A196957
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LINKS
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R. H. Hardin, Table of n, a(n) for n = 1..200
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EXAMPLE
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Some solutions for n=4
..1..1..0..0..0..0..1....0..0..1..0..0..1..0....1..0..0..1..0..1..0
..0..0..0..0..0..0..1....0..0..1..0..0..1..0....1..0..0..1..0..1..0
..1..0..0..0..0..0..0....0..4..0..0..4..0..1....0..0..0..0..4..0..1
..1..0..1..1..0..1..1....0..0..1..1..0..0..1....1..1..0..0..0..0..1
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CROSSREFS
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Sequence in context: A196435 A197198 A295119 * A132386 A127390 A142646
Adjacent sequences: A196953 A196954 A196955 * A196957 A196958 A196959
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KEYWORD
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nonn
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AUTHOR
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R. H. Hardin Oct 08 2011
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STATUS
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approved
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