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A236974
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Number of (n+1)X(2+1) 0..3 arrays with the maximum plus the upper median minus the minimum of every 2X2 subblock equal
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1
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1238, 9854, 76212, 635960, 5259146, 44597946, 376887360, 3222991866, 27520095568, 236568864708, 2032537681056, 17535842104346, 151294565594066, 1308890744507700, 11327010592855074, 98206225621215244, 851830423648769622
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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=3
..3..2..3....0..3..2....1..2..0....0..1..0....2..3..1....3..3..3....2..3..1
..2..0..2....0..2..0....3..2..1....0..3..0....1..2..1....3..0..3....0..3..0
..3..2..3....0..3..0....2..3..2....0..1..0....2..3..2....1..3..3....0..3..0
..1..0..0....1..2..0....3..3..2....3..0..3....3..3..3....0..3..0....3..1..3
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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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