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A237725
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Number of (n+1)X(3+1) 0..2 arrays with the maximum plus the upper median minus the lower median of every 2X2 subblock differing from its horizontal and vertical neighbors by exactly one
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1
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1510, 13496, 122940, 1145290, 10499035, 95855164, 880137130, 8127250116, 74629273042, 683964254956, 6286003833036, 57856832489276, 531534461181318, 4878726987367352, 44841216521683074, 412241976376016092
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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 recurrence of order 88 (see link above)
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EXAMPLE
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Some solutions for n=3
..1..2..2..1....1..1..0..1....2..0..1..1....0..0..0..0....0..1..0..2
..1..1..0..1....2..2..1..1....2..0..2..1....0..1..1..0....2..0..1..0
..2..2..1..1....2..1..2..0....1..0..2..1....2..1..1..2....0..2..0..1
..2..2..0..0....2..1..1..2....2..1..0..1....2..1..2..0....2..1..1..1
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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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