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Search: id:A166775
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A166775 Number of nXn 1..2 arrays containing at least one of each value, all equal values connected, and rows considered as a single number in nondecreasing order. +0
1
0, 7, 44, 317, 3640, 78101 (list; graph; listen)
OFFSET

1,2

EXAMPLE

Some solutions for n=4

...1.1.1.1...2.1.1.1...2.1.1.1...1.1.1.1...2.1.1.1...1.1.1.1...2.1.1.1

...1.1.1.1...2.1.1.2...2.1.2.1...2.1.1.1...2.1.1.1...1.2.1.1...2.1.1.1

...1.1.1.1...2.1.1.2...2.1.2.1...2.2.2.1...2.1.1.1...2.2.2.1...2.1.1.1

...2.2.2.2...2.2.2.2...2.2.2.2...2.2.2.2...2.2.2.2...2.2.2.1...2.2.1.1

------

...1.1.1.1...2.2.1.1...1.1.1.1...1.1.1.1...1.1.1.1...1.2.2.2...2.1.1.1

...1.2.1.1...2.2.2.1...1.1.1.1...1.2.2.2...1.2.1.1...1.2.2.2...2.1.1.1

...2.2.2.1...2.2.2.1...1.2.1.1...2.2.2.2...1.2.2.1...1.2.2.2...2.2.1.2

...2.2.2.2...2.2.2.2...1.2.2.2...2.2.2.2...1.2.2.2...2.2.2.2...2.2.2.2

CROSSREFS

Sequence in context: A099464 A093738 A091127 this_sequence A156374 A171493 A153492

Adjacent sequences: A166772 A166773 A166774 this_sequence A166776 A166777 A166778

KEYWORD

nonn

AUTHOR

Ron Hardin (rhhardin(AT)att.net) Oct 21 2009

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Last modified December 21 10:15 EST 2009. Contains 171081 sequences.


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