A166834 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 nonincreasing order.

0, 30, 3948, 70534, 617197, 3653765, 16800487

Offset

1,2

Links

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

Example

Some solutions for n=3
...2.2.1...3.2.1...2.1.1...3.1.1...3.3.2...2.1.1...3.3.2...5.2.2...2.1.1
...3.2.6...4.4.5...4.6.3...4.2.2...5.4.2...4.5.5...5.5.4...5.3.1...5.4.4
...5.5.4...4.6.6...5.6.6...6.6.5...6.1.1...4.6.3...6.6.1...6.4.1...6.6.3
------
...3.3.1...3.2.1...4.3.2...3.2.1...4.4.1...3.2.2...2.1.1...3.1.1...1.1.1
...5.2.4...3.2.4...4.6.1...4.2.2...5.3.3...4.6.1...2.5.4...5.6.2...4.3.1
...6.6.4...6.2.5...5.6.1...5.5.6...6.3.2...6.6.5...3.5.6...6.6.4...5.2.6

Crossrefs

Sequence in context: A275049 A127849 A166845 * A246620 A216728 A196466

Adjacent sequences: A166831 A166832 A166833 * A166835 A166836 A166837

Keyword

nonn

Author

R. H. Hardin Oct 21 2009

Status

approved