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A237504
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Number of (n+1)X(1+1) 0..2 arrays with the maximum plus the upper median minus the minimum of every 2X2 subblock differing from its horizontal and vertical neighbors by exactly one
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1
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81, 328, 1342, 5622, 23545, 97700, 406008, 1690160, 7044600, 29290848, 121938192, 507239832, 2112696916, 8786861808, 36590339088, 152192510432, 633818640688, 2636209092480, 10978287344480, 45661928555744, 190158818087504
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OFFSET
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1,1
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COMMENTS
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Column 1 of A237511
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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) = 208*a(n-4) +1448*a(n-6) +2500*a(n-8) +528*a(n-10) -624*a(n-12)
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EXAMPLE
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Some solutions for n=5
..0..2....2..1....2..0....0..2....1..1....0..2....1..2....2..1....2..1....0..1
..0..2....1..1....2..2....2..1....0..0....2..2....1..1....1..0....1..0....2..1
..1..1....1..1....1..2....0..1....0..1....1..2....2..2....2..2....1..1....2..0
..0..0....1..2....1..1....1..1....1..0....2..0....0..2....1..2....2..0....1..1
..1..0....2..1....2..2....0..2....2..1....1..1....1..0....0..2....1..2....1..2
..1..1....1..1....0..0....2..0....2..0....0..0....2..2....1..1....0..0....2..2
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CROSSREFS
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Sequence in context: A236828 A236821 A237511 * A222162 A237481 A237474
Adjacent sequences: A237501 A237502 A237503 * A237505 A237506 A237507
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KEYWORD
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nonn
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AUTHOR
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R. H. Hardin, Feb 08 2014
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STATUS
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approved
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