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A250460
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Number of (n+1)X(n+1) 0..1 arrays with nondecreasing min(x(i,j),x(i,j-1)) in the i direction and nondecreasing min(x(i,j),x(i-1,j)) in the j direction
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1
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11, 134, 3476, 204721, 27076065, 8093522514, 5462124226322, 8328699777016744, 28688178263528167112, 223246538149490827371276, 3924702068331178468638788526, 155874997244516815039571897178325
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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
..0..0..0..0....0..0..0..0....0..1..0..0....0..0..1..0....1..0..0..0
..0..0..1..0....1..0..1..1....0..0..0..0....1..0..0..0....0..1..0..0
..1..0..0..1....0..0..1..1....1..0..0..0....0..1..0..0....1..0..0..0
..0..0..0..1....0..0..1..1....0..0..0..0....0..0..0..0....0..1..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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