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A223663
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T(n,k) = Number of n X k 0..3 arrays with row sums unimodal and column sums inverted unimodal.
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6
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4, 16, 16, 50, 256, 50, 130, 3060, 3060, 130, 296, 29922, 141046, 29922, 296, 610, 252912, 5285887, 5285887, 252912, 610, 1163, 1912914, 169756788, 761845474, 169756788, 1912914, 1163, 2083, 13254601, 4836834467, 93974096640, 93974096640
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OFFSET
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1,1
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COMMENTS
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Table starts
....4........16............50..............130...............296
...16.......256..........3060............29922............252912
...50......3060........141046..........5285887.........169756788
..130.....29922.......5285887........761845474.......93974096640
..296....252912.....169756788......93974096640....44626165058452
..610...1912914....4836834467...10253839694278.18744540823704239
.1163..13254601..125226945708.1013084819998517
.2083..85563043.2997363216275
.3544.521069404
.5776
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LINKS
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EXAMPLE
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Some solutions for n=3 k=4
..2..0..0..2....2..2..0..0....2..2..0..2....0..0..1..2....2..0..0..0
..0..2..3..0....2..2..3..0....2..0..1..0....3..0..1..2....0..2..1..2
..2..0..2..3....3..2..0..0....0..1..0..2....3..2..1..1....1..0..1..0
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CROSSREFS
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KEYWORD
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AUTHOR
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STATUS
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approved
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