A166822 Number of nX3 1..6 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 increasing order.

0, 90, 8688, 138076, 1131209, 6387949

Offset

1,2

Links

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

Example

Some solutions for n=3
...1.2.4...1.4.5...1.3.4...1.4.4...1.6.6...1.3.4...1.1.4...1.2.3...2.3.4
...1.6.5...3.2.6...5.5.5...2.3.6...2.3.5...6.6.2...1.2.3...1.6.5...3.3.6
...3.6.6...6.6.6...6.2.2...5.5.5...2.4.4...6.6.5...5.5.6...4.6.6...5.5.1
------
...1.3.6...1.2.5...1.2.5...1.1.6...3.5.5...1.3.3...1.2.6...1.3.6...1.2.5
...2.3.3...4.3.5...3.3.3...2.3.3...4.1.2...2.5.5...3.2.2...4.2.6...3.3.5
...5.4.3...4.6.5...6.6.4...5.3.4...6.1.2...4.5.6...5.5.4...4.5.5...6.4.5

Crossrefs

Sequence in context: A239044 A112004 A216706 * A166804 A116273 A036257

Adjacent sequences: A166819 A166820 A166821 * A166823 A166824 A166825

Keyword

nonn

Author

R. H. Hardin Oct 21 2009

Status

approved