2,2

Some solutions for n=4

......1..........1..........1..........1..........1..........1..........1....

.....2.1........1.3........2.2........1.3........1.1........3.3........1.1...

....2.1.1......1.1.3......2.3.2......3.1.3......3.3.3......3.2.3......2.2.3..

...2.1.3.3....2.3.3.3....2.3.3.3....2.3.3.3....2.2.3.3....2.2.2.3....2.2.3.3.

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......1..........1..........1..........1..........1..........1..........1....

.....3.1........1.1........2.2........3.1........3.1........1.2........2.1...

....3.1.3......2.2.1......2.3.3......3.1.1......3.3.3......2.2.3......2.2.1..

...2.3.3.3....2.3.3.3....2.2.2.3....2.3.3.3....2.2.2.3....2.2.3.3....2.1.1.3.

Sequence in context: A142266 A160219 A095785 this_sequence A121823 A142321 A007682

Adjacent sequences: A164742 A164743 A164744 this_sequence A164746 A164747 A164748

nonn

Ron Hardin (rhhardin(AT)att.net) Aug 24 2009