A166790 - OEIS

%I #5 May 28 2021 15:04:51

%S 36,876,9289,67453,377824,1765350

%N Number of n X 5 1..3 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 ...1.1.2.2.2...2.2.2.2.2...1.1.1.2.2...1.1.1.1.1...2.2.2.2.2...2.1.3.3.3

%e ...3.1.1.1.2...2.2.3.2.1...2.2.1.2.3...1.1.1.2.1...3.2.3.1.1...2.2.3.3.3

%e ...3.2.2.2.2...3.3.3.3.1...2.2.2.2.2...3.3.2.2.1...3.3.3.3.1...3.3.3.3.3

%e ------

%e ...2.2.2.1.1...1.1.1.1.1...2.2.2.2.2...1.1.3.3.2...3.1.1.1.1...1.1.1.1.1

%e ...2.2.2.2.2...1.1.3.3.1...2.3.2.2.1...1.3.3.2.2...3.2.2.2.2...1.1.1.1.1

%e ...3.3.3.3.2...1.2.3.3.3...3.3.3.2.2...2.2.2.2.2...3.3.2.2.2...1.1.2.1.3

%K nonn

%O 1,1

%A _R. H. Hardin_ Oct 21 2009