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A235513
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Number of (n+1)X(4+1) 0..1 arrays with the sum of each 2X2 subblock maximum and minimum lexicographically nondecreasing rowwise and columnwise
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1
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746, 16117, 343063, 7186597, 150092214, 3125826729, 65064307612, 1353709346996, 28162807605171, 585865208407308, 12187532238559827, 253530263035798053, 5274041168239019195, 109712641094198459037, 2282284675777630661147
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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=2
..0..1..0..1..1....1..0..0..0..0....0..1..0..0..1....0..0..0..1..0
..0..0..1..0..0....1..1..0..1..0....1..0..0..1..0....0..1..0..0..0
..1..1..1..0..1....0..0..0..0..1....1..0..1..0..0....1..0..1..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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