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A224707
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Number of different patterns using tiles from 1*1 to 1*n with each tile flush or diagonal to at least one other.
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0
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OFFSET
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0,3
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COMMENTS
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Similar to A214366, but we can also have:
xxx xxxo
oo + o
+
etc...
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LINKS
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EXAMPLE
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The 3 cases for n=2 are:
oo+ oo oo
+ +
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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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