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A187135
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Number of (n+1)X5 0..2 arrays with every 2X2 subblock trace equal to exactly one or two horizontal and vertical neighbor 2X2 subblock traces
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1
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3249, 182214, 5755698, 201302208, 7020258336, 245891941002, 8616423081600, 301728175130790, 10570455159698376, 370183320491626512, 12967430068901756304, 454182945213312573174, 15908967753084162698652
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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 4X5
..0..2..0..0..1....1..2..2..2..0....0..0..1..1..2....1..0..1..0..2
..0..0..0..2..2....1..1..0..0..0....0..1..1..1..0....0..0..1..1..2
..0..0..1..1..0....0..0..0..1..1....0..0..1..1..0....0..0..1..1..2
..0..0..0..1..1....0..0..0..2..1....0..0..1..0..0....0..0..0..2..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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