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A196299
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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 3,0,1,4,2 for x=0,1,2,3,4
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1
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25, 1597, 21344, 686759, 19123802, 513362648, 14372583192, 402254701097, 11172616795189, 309961960884860, 8636593218691567, 240597854301944078, 6696378931249054755, 186420836116243663032, 5190804183327066922164
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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 0's, every 2 is next to 2 1's, every 3 is next to 3 4's, every 4 is next to 4 2's
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LINKS
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EXAMPLE
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Some solutions for n=4
..0..0..0..1..1..1..0....0..0..0..1..2..1..2....0..0..0..0..0..0..1
..1..1..2..1..0..1..1....1..1..1..1..0..0..1....0..0..2..1..1..1..2
..2..1..0..1..2..1..1....2..1..1..1..0..0..1....0..0..1..2..2..1..0
..0..2..1..1..0..0..0....0..0..0..1..2..1..2....1..1..1..0..0..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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