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A237960
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Number of (n+1)X(3+1) 0..2 arrays with the maximum plus the lower 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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1422, 10942, 81483, 645156, 5242451, 41361664, 324579268, 2567231540, 20445704700, 161413538260, 1277153952270, 10095026043660, 80119191734632, 632823187624908, 5014971680503924, 39627280740228456, 314267888886806408
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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 82 (see link above)
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EXAMPLE
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Some solutions for n=3
..2..1..0..0....2..0..0..2....2..0..0..2....0..0..0..1....1..0..2..0
..1..1..0..0....0..1..0..1....0..1..1..0....0..1..2..2....1..1..1..0
..1..1..1..1....2..2..0..1....2..2..1..2....1..1..0..0....0..0..1..0
..0..1..1..2....2..2..1..1....0..0..1..1....0..2..0..1....2..0..0..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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