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A235898
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Number of (n+1)X(4+1) 0..2 arrays with the minimum plus the maximum equal to the lower median plus the upper median in every 2X2 subblock
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1
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1797, 17001, 148945, 1384257, 12931393, 124394337, 1221438401, 12293017761, 126561018497, 1332373322337, 14316580780609, 156716540659233, 1743686518531585, 19674932381346273, 224642399432061377
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OFFSET
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1,1
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COMMENTS
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Column 4 of A235902
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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) = 33*a(n-1) -312*a(n-2) -360*a(n-3) +16976*a(n-4) -22128*a(n-5) -360576*a(n-6) +253440*a(n-7) +3520512*a(n-8) +3870720*a(n-9)
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EXAMPLE
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Some solutions for n=3
..1..1..2..1..2....0..1..0..1..0....0..2..1..2..0....1..2..0..1..0
..1..1..2..1..0....2..1..2..1..0....1..1..0..1..1....0..1..1..0..1
..2..0..1..2..1....1..0..1..0..1....0..0..1..0..0....1..2..0..1..0
..0..2..1..2..1....0..1..2..1..2....1..1..2..1..1....1..0..2..1..0
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CROSSREFS
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Sequence in context: A249191 A234203 A220058 * A035891 A069476 A179695
Adjacent sequences: A235895 A235896 A235897 * A235899 A235900 A235901
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KEYWORD
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nonn
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AUTHOR
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R. H. Hardin, Jan 16 2014
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STATUS
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approved
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