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A241347
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Number of nX4 0..3 arrays with no element equal to the same number of vertical neighbors as horizontal neighbors, with new values 0..3 introduced in row major order
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1
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2, 22, 415, 10998, 295782, 8216943, 229552661, 6440926150, 180941958872, 5086440781934, 143018442461614, 4021763658647636, 113099275164521657, 3180615701360043164, 89447028720676238703, 2515486937762307225624
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OFFSET
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1,1
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COMMENTS
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LINKS
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EXAMPLE
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Some solutions for n=4
..0..0..0..0....0..1..2..1....0..0..0..0....0..0..1..1....0..1..2..3
..1..0..1..1....0..1..2..1....1..1..1..2....2..2..0..0....0..1..2..3
..1..0..2..2....3..0..0..2....2..1..0..2....3..1..1..3....0..2..2..2
..1..3..3..3....3..1..1..2....2..0..0..0....3..0..0..3....0..1..1..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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