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A237401
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Number of (n+1) X (3+1) 0..3 arrays with the maximum plus the upper median plus the lower median minus the minimum of every 2 X 2 subblock differing from its horizontal and vertical neighbors by exactly one.
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1
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9296, 126848, 1748190, 25159676, 361453184, 5197555932, 74749364118, 1077627856648, 15531402661308, 223495979069900, 3216439008082184, 46370877351516392, 668414586969745184, 9618695801956763148
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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=2
..2..1..3..0....1..1..0..0....0..0..0..1....2..3..0..3....0..2..2..2
..0..1..0..3....2..3..2..3....1..1..2..1....3..1..2..0....1..3..2..0
..3..1..2..0....2..3..1..0....2..1..2..0....2..0..2..0....3..2..3..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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