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A237566
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Number of (n+1)X(7+1) 0..2 arrays with the upper median plus the lower median of every 2X2 subblock differing from its horizontal and vertical neighbors by exactly one
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1
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311512, 4121060, 61521086, 977290740, 14891233160, 228407442348, 3615152813462, 55793291175056, 882176438911922, 13667993065228308, 217505797950500694, 3377924302868998888, 53802897865062024654
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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..2..0..0..0..2..1..0....0..2..1..1..2..2..0..1....0..1..1..1..0..0..1..1
..0..1..1..1..0..1..1..0....0..2..1..2..1..2..1..2....0..0..0..1..0..2..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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