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A251095
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Number of (n+1)X(3+1) 0..1 arrays with no 2X2 subblock having its minimum diagonal element less than its minimum antidiagonal element
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1
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129, 1109, 9597, 82814, 713769, 6151051, 53009570, 456842112, 3937123328, 33930621210, 292418287803, 2520096887534, 21718506027532, 187172766061609, 1613078004734497, 13901705381759445, 119806613163586853
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OFFSET
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1,1
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COMMENTS
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Column 3 of A251100
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LINKS
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R. H. Hardin, Table of n, a(n) for n = 1..210
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FORMULA
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Empirical: a(n) = 16*a(n-1) -90*a(n-2) +285*a(n-3) -577*a(n-4) +763*a(n-5) -652*a(n-6) +352*a(n-7) -112*a(n-8) +16*a(n-9)
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EXAMPLE
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Some solutions for n=4
..0..0..1..0....0..1..0..0....0..1..1..1....1..0..0..0....1..1..0..1
..1..0..1..1....0..0..0..0....0..0..1..1....1..1..0..0....0..0..0..1
..0..0..0..1....0..0..0..0....1..0..0..1....0..1..0..0....1..1..0..0
..1..1..0..1....0..0..1..1....0..1..0..0....0..0..1..0....0..1..1..0
..0..1..0..1....1..0..1..1....0..0..0..1....0..0..0..1....0..0..0..0
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CROSSREFS
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Sequence in context: A036548 A046286 A341552 * A329727 A209532 A233305
Adjacent sequences: A251092 A251093 A251094 * A251096 A251097 A251098
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KEYWORD
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nonn
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AUTHOR
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R. H. Hardin, Nov 29 2014
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STATUS
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approved
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