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A232650
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Number of (n+2)X(4+2) 0..1 arrays x(i,j) with every row sum{j*x(i,j), j=1..4+2} equal, and every column sum{i*x(i,j), i=1..n+2} equal, with upper left element zero
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0
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1, 1, 7, 7, 1, 19, 55, 1, 259, 613, 2761, 7615, 8881, 1, 55765, 142369, 1, 7276903, 27224617, 1, 17099809, 45375499
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OFFSET
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1,3
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COMMENTS
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LINKS
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EXAMPLE
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Some solutions for n=6
..0..1..0..0..1..0....0..0..1..1..0..0....0..1..1..1..1..0....0..1..0..0..1..0
..0..1..0..0..1..0....0..1..0..0..1..0....1..1..0..0..1..1....0..1..0..0..1..0
..0..1..0..0..1..0....0..1..0..0..1..0....0..1..1..1..1..0....0..1..0..0..1..0
..0..0..1..1..0..0....1..0..0..0..0..1....1..1..0..0..1..1....1..0..0..0..0..1
..1..0..0..0..0..1....0..0..1..1..0..0....1..0..1..1..0..1....0..0..1..1..0..0
..0..1..0..0..1..0....0..0..1..1..0..0....1..1..0..0..1..1....0..1..0..0..1..0
..1..0..0..0..0..1....0..1..0..0..1..0....1..0..1..1..0..1....0..0..1..1..0..0
..0..0..1..1..0..0....1..0..0..0..0..1....0..1..1..1..1..0....1..0..0..0..0..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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