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A196988
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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 2,3,4,1,0 for x=0,1,2,3,4
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1
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1, 31, 707, 11647, 242602, 4743311, 93411402, 1863379223, 37097158961, 737372275936, 14668565862312, 291924510277289, 5808427537351763, 115562866241227272, 2299357190745139049, 45750931870365018621
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OFFSET
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1,2
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COMMENTS
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Every 0 is next to 0 2's, every 1 is next to 1 3's, every 2 is next to 2 4's, every 3 is next to 3 1's, every 4 is next to 4 0's
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LINKS
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EXAMPLE
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Some solutions for n=4
..1..0..0..0..0..1..0....0..0..0..0..0..0..0....0..1..1..0..0..1..0
..3..1..0..0..1..3..1....0..1..0..0..1..0..0....1..3..3..1..0..3..1
..1..0..1..3..1..0..0....0..3..1..0..3..1..0....0..1..1..0..0..1..0
..0..0..0..1..0..0..0....0..1..0..0..1..0..0....0..0..0..0..0..0..0
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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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