A166811 Number of nX6 1..3 arrays containing at least one of each value, all equal values connected, rows considered as a single number in nondecreasing order, and columns considered as a single number in nondecreasing order.

10, 270, 2636, 18295, 108609

Offset

1,1

Links

Table of n, a(n) for n=1..5.

Example

Some solutions for n=3
...1.1.1.2.3.3...1.1.1.1.1.1...1.1.1.1.1.3...1.1.1.2.3.3...1.1.1.2.2.3
...1.2.2.2.2.3...1.1.1.2.3.3...1.1.2.3.3.3...1.1.2.2.2.2...1.1.3.3.3.3
...2.2.2.2.2.3...1.1.2.2.2.3...1.1.3.3.3.3...1.1.2.2.2.2...3.3.3.3.3.3
------
...1.1.3.3.3.3...1.1.1.1.1.3...1.1.1.1.1.3...1.1.1.1.2.2...1.2.3.3.3.3
...1.2.2.2.2.3...1.1.1.2.2.2...1.1.1.1.2.3...1.2.2.2.2.2...3.3.3.3.3.3
...1.2.2.3.3.3...2.2.2.2.2.2...2.2.2.2.2.2...1.2.2.2.2.3...3.3.3.3.3.3

Crossrefs

Sequence in context: A055408 A245983 A336027 * A089906 A294515 A287317

Adjacent sequences: A166808 A166809 A166810 * A166812 A166813 A166814

Keyword

nonn

Author

R. H. Hardin Oct 21 2009

Status

approved