A166784 Number of nX3 1..5 arrays containing at least one of each value, all equal values connected, and rows considered as a single number in nondecreasing order.

0, 420, 10540, 93645, 523316, 2216887, 7776832, 23747742

Offset

1,2

Links

Table of n, a(n) for n=1..8.

Example

Some solutions for n=3
...1.3.2...1.1.5...3.2.2...3.2.1...1.2.3...5.2.1...1.1.1...1.1.2...2.2.2
...5.2.2...2.4.5...4.2.1...3.5.1...2.2.2...5.2.3...4.2.1...4.2.2...4.3.3
...5.4.2...4.4.3...5.5.1...4.5.5...4.5.2...5.4.3...5.3.1...5.3.3...5.1.1
------
...3.2.1...1.3.4...4.1.2...3.2.1...3.2.1...1.5.4...4.2.2...2.2.5...1.1.3
...4.5.1...3.3.3...5.3.5...4.1.1...3.4.1...2.5.3...4.3.1...2.4.3...1.4.4
...5.5.5...5.3.2...5.5.5...4.5.5...5.5.1...5.5.3...4.3.5...4.4.1...5.4.2

Crossrefs

Sequence in context: A269016 A317983 A179718 * A223365 A288071 A289226

Adjacent sequences: A166781 A166782 A166783 * A166785 A166786 A166787

Keyword

nonn

Author

R. H. Hardin Oct 21 2009

Status

approved