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A232525
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Number of (n+1)X(3+1) 0..3 arrays x(i,j) with every row sum{j*x(i,j), j=1..3+1} equal, and every column sum{i*x(i,j), i=1..n+1} equal, with top left element <= 1
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0
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2, 19, 223, 619, 523, 16285, 141433, 2231968, 20520962, 138309075, 1507636982, 428685674
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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=3
..1..1..3..1....0..2..1..3....1..3..3..0....1..2..1..2....0..1..1..2
..2..0..2..2....1..3..0..3....2..0..2..2....2..0..2..2....2..0..1..2
..1..1..3..1....3..1..2..2....1..3..3..0....1..2..1..2....3..0..2..1
..2..3..0..2....2..2..3..1....2..1..0..3....2..2..2..1....0..3..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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