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A236895
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Number of (n+1)X(1+1) 0..2 arrays with the maximum plus the upper median of every 2X2 subblock equal
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1
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81, 339, 1426, 6545, 30727, 148966, 734805, 3679063, 18601074, 94728601, 484797943, 2489729974, 12816761181, 66088527271, 341168095114, 1762603785057, 9111229406855, 47115466594414, 243704127371685, 1260784775294295
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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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FORMULA
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Empirical: a(n) = 9*a(n-1) -187*a(n-3) +343*a(n-4) +1052*a(n-5) -2856*a(n-6) -1872*a(n-7) +8792*a(n-8) -856*a(n-9) -11368*a(n-10) +5024*a(n-11) +4992*a(n-12) -3072*a(n-13)
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EXAMPLE
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Some solutions for n=5
..0..1....1..0....1..2....0..2....2..2....1..1....2..1....0..2....0..2....2..1
..1..1....2..2....2..2....2..2....0..2....2..2....2..2....2..1....2..1....0..2
..0..0....2..2....0..1....1..1....2..0....1..0....1..0....1..2....2..0....2..0
..1..1....2..1....2..2....2..2....2..1....2..2....2..2....2..0....2..0....2..1
..0..1....2..0....2..1....2..0....2..2....0..0....0..2....2..2....1..2....1..2
..1..1....0..2....2..2....2..2....0..1....2..2....2..0....1..0....0..2....2..2
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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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