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A203486
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Number of nX3 0..2 arrays with row sums equal and column sums unequal to adjacent columns
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1
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12, 80, 624, 3760, 25002, 171068, 1107888, 7411872, 50469114, 335270710, 2266967088, 15497479060, 104719636176, 715192200880, 4919017621164, 33647413101184, 231673960276602, 1602349695229334, 11054192845643568
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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=5
..0..0..1....1..2..2....1..1..0....2..1..0....2..1..2....1..1..0....1..0..2
..0..1..0....2..1..2....1..1..0....2..1..0....1..2..2....0..1..1....2..1..0
..0..1..0....2..2..1....1..1..0....2..1..0....1..2..2....2..0..0....2..0..1
..0..1..0....2..1..2....0..0..2....0..1..2....1..2..2....0..2..0....2..0..1
..1..0..0....2..1..2....2..0..0....0..1..2....1..2..2....2..0..0....2..1..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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