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 A166775 Number of n X n 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
 0, 7, 44, 317, 3640, 78101 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,2 LINKS Table of n, a(n) for n=1..6. 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: A254660 A093738 A091127 * A221541 A327680 A156374 Adjacent sequences: A166772 A166773 A166774 * A166776 A166777 A166778 KEYWORD nonn AUTHOR R. H. Hardin Oct 21 2009 STATUS approved

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Last modified June 1 01:56 EDT 2023. Contains 363068 sequences. (Running on oeis4.)