A166844 Number of nX3 1..5 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 decreasing order.

0, 55, 1660, 16140, 94851, 414837, 1487423, 4614260

Offset

1,2

Links

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

Example

Some solutions for n=3
...3.2.1...3.2.1...2.2.1...4.4.2...3.3.1...3.2.2...3.1.1...4.1.1...3.3.1
...3.2.2...3.4.5...3.1.1...5.1.2...3.3.2...4.4.2...4.4.4...4.5.3...5.3.2
...4.5.2...5.5.5...4.5.1...5.5.3...5.4.2...4.5.1...4.5.2...5.5.2...5.4.2
------
...2.1.1...2.1.1...3.2.1...2.2.1...4.3.1...3.3.1...4.3.1...3.2.1...3.2.2
...4.3.1...2.5.4...3.4.1...4.2.1...4.4.2...5.2.1...4.4.2...3.4.5...4.5.1
...5.5.5...3.5.4...3.5.5...5.2.3...5.4.4...5.4.1...4.5.5...3.4.5...5.5.1

Crossrefs

Sequence in context: A222836 A017718 A173113 * A077688 A188712 A049435

Adjacent sequences: A166841 A166842 A166843 * A166845 A166846 A166847

Keyword

nonn

Author

R. H. Hardin Oct 21 2009

Status

approved