login
A166846
Number of nX4 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 decreasing order.
0
0, 9, 109, 673, 2923, 10112, 29741, 77372, 182772, 399321
OFFSET
1,2
EXAMPLE
Some solutions for n=4
...2.2.1.1...2.1.1.1...1.1.1.1...2.1.1.1...3.2.2.1...3.2.2.2...2.2.2.2
...2.2.2.2...2.2.1.1...2.1.1.1...2.2.1.1...3.2.2.1...3.3.2.1...3.2.2.1
...3.2.3.2...2.2.2.1...2.2.2.1...2.2.2.1...3.2.2.1...3.3.2.2...3.3.2.1
...3.3.3.3...3.3.3.3...2.3.2.1...2.2.3.3...3.3.2.2...3.3.2.2...3.3.3.1
------
...2.1.1.1...2.2.2.1...2.2.2.2...1.1.1.1...3.2.1.1...2.2.2.2...2.1.1.1
...2.2.2.1...2.2.2.1...3.2.2.1...1.1.1.1...3.2.2.1...3.2.1.1...2.2.2.1
...2.2.2.1...3.2.2.1...3.2.2.1...3.2.1.1...3.2.2.1...3.2.3.1...2.3.2.1
...2.3.2.1...3.3.2.2...3.3.1.1...3.2.2.1...3.3.3.1...3.3.3.1...3.3.2.1
CROSSREFS
Sequence in context: A330876 A001691 A157906 * A058421 A267795 A128876
KEYWORD
nonn
AUTHOR
R. H. Hardin Oct 21 2009
STATUS
approved