A166804 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 nondecreasing order.

0, 90, 8868, 141180, 1151013, 6470252, 28530284

Offset

1,2

Links

Table of n, a(n) for n=1..7.

Example

Some solutions for n=3
...2.3.5...1.1.2...1.2.3...1.3.4...2.4.5...1.2.5...1.3.5...2.3.3...1.1.6
...4.1.5...3.6.5...1.2.6...1.6.4...3.4.4...3.4.6...1.6.6...3.3.5...2.3.5
...6.1.5...6.6.4...5.4.4...5.2.2...3.6.1...4.4.6...4.6.2...4.1.6...4.4.4
------
...1.2.4...1.3.3...1.1.5...1.3.4...2.2.3...2.3.5...1.2.5...1.1.3...2.6.6
...2.2.4...2.2.2...3.3.6...2.2.2...2.5.4...2.6.1...3.3.4...4.6.2...4.1.3
...5.6.3...6.4.5...3.4.2...5.5.6...6.5.1...4.6.1...3.6.6...6.6.5...5.3.3

Crossrefs

Sequence in context: A112004 A216706 A166822 * A116273 A036257 A276352

Adjacent sequences: A166801 A166802 A166803 * A166805 A166806 A166807

Keyword

nonn

Author

R. H. Hardin Oct 21 2009

Status

approved