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Number of nX7 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

%I #3 Mar 31 2012 12:35:36

%S 12,97,1272,13357,103702

%N Number of nX7 1..2 arrays containing at least one of each value, all equal values connected, and rows considered as a single number in nondecreasing order.

%e Some solutions for n=3

%e ...2.2.1.1.1.1.2...1.1.1.1.1.1.2...1.1.1.1.1.2.2...1.1.1.2.2.2.2

%e ...2.2.1.1.1.1.2...1.2.1.1.2.1.2...2.1.1.1.1.2.2...2.1.2.2.2.2.2

%e ...2.2.2.2.2.2.2...1.2.2.2.2.2.2...2.2.2.2.2.2.2...2.2.2.2.2.2.2

%e ------

%e ...1.1.1.1.1.1.1...1.1.1.1.1.1.1...2.1.1.2.2.2.2...1.1.1.1.1.1.1

%e ...1.1.1.1.1.2.1...1.1.1.1.1.1.1...2.2.1.2.2.2.2...2.1.2.2.1.1.1

%e ...1.1.2.2.2.2.2...2.2.2.1.1.1.1...2.2.2.2.2.2.2...2.2.2.2.2.2.2

%K nonn

%O 1,1

%A _R. H. Hardin_ Oct 21 2009