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A197430
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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 4,0,1,1,1 for x=0,1,2,3,4
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1
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25, 2107, 55567, 4017895, 195632425, 9869104795, 529968166606, 27927270266251, 1461399711177586, 76357681634837889, 4016048479413867754, 210995429397329769859, 11066069030221109085243, 581180575552246936955138
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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 4's, every 1 is next to 1 0's, every 2 is next to 2 1's, every 3 is next to 3 1'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 containing all values 0 to 4 for n=4
..0..0..1..2..0..0..0....0..0..0..1..3..1..0....0..0..1..1..0..1..1
..0..2..1..1..3..1..2....0..2..1..4..1..1..1....0..0..1..4..1..2..0
..1..1..0..0..1..4..1....1..1..4..1..0..0..1....1..1..3..1..1..0..0
..2..1..0..0..1..1..0....1..0..1..1..0..0..1....2..1..0..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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