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A203559
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Number of nX3 0..2 arrays with row sums equal and column sums equal
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1
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3, 9, 87, 177, 993, 10833, 35619, 219873, 2083713, 8710539, 55644339, 473819481, 2320792659, 15120204297, 119105713827, 650725327233, 4293779332929, 32065818855387, 188739799967427, 1256510215733187, 9061494550445907
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OFFSET
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1,1
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COMMENTS
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Column 3 of A203564
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LINKS
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R. H. Hardin, Table of n, a(n) for n = 1..122
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EXAMPLE
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Some solutions for n=5
..1..0..2....2..0..1....1..2..0....2..1..0....2..2..2....2..0..1....0..2..1
..0..1..2....0..2..1....2..1..0....2..1..0....2..2..2....1..0..2....2..1..0
..2..0..1....0..1..2....1..1..1....0..2..1....2..2..2....0..1..2....1..1..1
..1..2..0....2..0..1....0..1..2....0..1..2....2..2..2....1..2..0....0..1..2
..1..2..0....1..2..0....1..0..2....1..0..2....2..2..2....1..2..0....2..0..1
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CROSSREFS
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Sequence in context: A011764 A018624 A032078 * A184098 A067210 A018654
Adjacent sequences: A203556 A203557 A203558 * A203560 A203561 A203562
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KEYWORD
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nonn
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AUTHOR
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R. H. Hardin Jan 03 2012
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STATUS
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approved
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