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A166755 Number of nXn 1..2 arrays containing at least one of each value, and all equal values connected. 0
0, 12, 106, 1254, 32426, 2247486 (list; graph; refs; listen; history; internal format)
OFFSET

1,2

EXAMPLE

Some solutions for n=4

...1.2.2.2...1.1.1.1...2.2.2.1...2.1.1.1...1.1.1.1...2.2.2.2...1.1.1.2

...1.2.1.2...2.2.2.1...2.2.2.1...2.2.1.1...1.1.2.2...1.2.2.2...2.2.1.2

...1.1.1.2...2.2.2.1...2.2.1.1...1.1.1.1...1.1.2.2...2.2.2.2...2.1.1.2

...2.2.2.2...2.1.1.1...2.2.2.2...1.1.1.1...2.2.2.2...2.2.2.2...2.2.2.2

------

...1.1.1.2...2.1.1.1...2.2.2.2...1.1.1.1...1.1.1.1...1.1.1.1...2.2.2.2

...1.1.2.2...2.1.1.1...2.2.1.2...1.1.1.1...2.2.1.1...1.2.1.2...1.2.2.2

...1.1.1.2...2.2.1.1...2.2.1.2...1.1.2.1...1.2.1.1...1.2.2.2...1.1.2.2

...1.1.2.2...2.2.2.2...2.1.1.1...2.2.2.1...1.1.1.1...1.1.1.2...1.1.1.2

CROSSREFS

Sequence in context: A090816 A144133 A089396 * A154671 A037972 A111990

Adjacent sequences:  A166752 A166753 A166754 * A166756 A166757 A166758

KEYWORD

nonn

AUTHOR

R. H. Hardin (rhhardin(AT)att.net) Oct 21 2009

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Last modified February 16 10:28 EST 2012. Contains 205904 sequences.