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A237206
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Number of (n+1)X(3+1) 0..3 arrays with the upper median plus the lower median minus the minimum of every 2X2 subblock equal
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1
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5130, 59386, 655186, 8448682, 107553623, 1448414238, 19305898426, 264733943408, 3593534378650, 49695732377361, 680698849965170, 9457824351573836, 130255102350059706, 1815360844500949400, 25097384613531422114
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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
..0..2..1..0....1..2..2..1....1..1..2..1....3..1..2..1....1..0..2..2
..1..1..3..1....0..1..1..3....1..1..1..1....2..2..2..2....2..3..1..3
..0..1..0..1....1..2..0..1....1..3..1..1....1..2..1..0....0..1..3..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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