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A236040
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Number of (n+1)X(4+1) 0..3 arrays colored with the difference of the upper median and the lower median in each 2X2 subblock
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1
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218568, 12435076, 674450852, 38512116748, 2269448820024, 132756133588092, 7731013027050748, 450965491862822024, 26330983920126345760, 1537037930666413965508, 89707456853270973776008
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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=1
..2..2..1..0..1....0..0..2..0..3....0..0..3..1..0....0..1..0..2..1
..0..3..1..2..0....0..3..0..0..1....1..3..3..0..0....1..2..2..2..0
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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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