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A186137
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Number of (n+1) X 6 0..2 arrays with no 2 X 2 subblock trace equal to any horizontal or vertical neighbor 2 X 2 subblock trace.
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1
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187704, 21216780, 2513594016, 296649133848, 35143110551556, 4163686846399494, 493359058239095898, 58456633907530057662, 6926519345320270001520, 820714863561408296836038, 97245970628884382202256854
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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 3 X 6
..0..0..1..2..2..2....0..0..0..0..1..0....0..0..1..1..2..2....0..0..2..1..1..1
..0..1..0..2..2..0....0..1..0..1..0..0....0..1..2..2..0..0....0..0..1..1..1..0
..0..0..2..0..0..1....0..2..0..2..2..0....0..0..0..0..2..0....0..1..0..1..0..1
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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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