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A237919
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Number of (n+1) X (5+1) 0..3 arrays with the upper median plus the lower median of every 2 X 2 subblock differing from its horizontal and vertical neighbors by exactly one.
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1
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406468, 12149024, 405401852, 14163256928, 488835819834, 16925434187136, 590192559141494, 20435454685816288, 714496961639809210, 24788891407048570312, 867098385461953895482, 30089142655310004742832
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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..1..1..2..2..3....0..2..3..1..2..1....0..2..1..1..1..2....0..2..1..1..3..0
..2..2..1..3..0..1....2..3..0..3..0..1....3..3..2..2..0..3....1..1..2..1..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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