A166770 Number of nX5 1..3 arrays containing at least one of each value, and all equal values connected.

36, 1716, 32208, 410832, 4256106, 38813010

Offset

1,1

Links

Table of n, a(n) for n=1..6.

Example

Some solutions for n=3
...3.3.3.3.3...1.3.3.3.3...2.2.3.3.3...3.3.3.3.2...1.3.3.1.1...2.2.1.1.1
...2.2.2.2.2...1.1.1.3.2...1.1.3.3.3...3.1.2.2.2...1.1.1.1.1...1.1.1.1.1
...2.2.1.2.2...1.1.2.2.2...1.3.3.3.3...3.3.2.2.2...2.2.2.2.2...1.3.1.1.1
------
...2.2.2.3.3...2.2.2.2.2...1.2.2.2.2...1.1.3.3.3...1.1.3.3.3...2.2.2.2.1
...2.2.3.3.1...2.2.1.2.2...1.1.1.2.3...1.1.1.1.3...1.2.2.2.3...2.3.3.2.1
...2.2.3.3.3...2.3.1.2.2...1.2.2.2.3...1.2.1.3.3...1.1.2.2.3...3.3.3.3.1

Crossrefs

Sequence in context: A209014 A268897 A034996 * A270602 A190918 A356730

Adjacent sequences: A166767 A166768 A166769 * A166771 A166772 A166773

Keyword

nonn

Author

R. H. Hardin Oct 21 2009

Status

approved