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A236785
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Number of (n+1)X(4+1) 0..2 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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2475, 19851, 145124, 1287919, 10951425, 101820364, 921870137, 8733287503, 81211467440, 774898990883, 7293638090037, 69775296750588, 660733874896417, 6326252988398973, 60109364320802748, 575636103622182519
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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
..0..2..1..0..2....1..0..1..2..1....0..2..1..1..1....0..2..0..0..0
..0..2..1..1..1....2..1..2..1..0....1..1..0..1..0....0..0..0..2..0
..1..1..2..0..2....2..1..2..1..1....2..2..1..1..2....0..0..0..0..0
..0..1..2..0..2....2..1..0..1..0....0..0..1..0..1....1..0..1..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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