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A234795
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Number of (n+1)X(7+1) 0..3 arrays with each 2X2 subblock having the number of clockwise edge increases less than or equal to the number of counterclockwise edge increases
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1
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671983416, 4002569571664, 19186434495264308, 83279814838224225520, 344333604652481774211624, 1388996674379291663917878160, 5531886740855556531314993495348, 21884766766460273803503576438175888
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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
..0..0..0..0..3..0..3..3....0..0..0..0..3..0..0..3....0..0..0..0..0..3..1..3
..0..0..0..1..1..3..1..1....0..0..0..1..2..3..3..0....0..0..0..0..2..2..3..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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