2,1

Some solutions for n=3

...1.2.2.............1.1.2.............1.1.2.............1.1.2..........

.....2.2.2.............1.1.1.............2.2.2.............2.2.2........

.......2.2.2.............1.1.1.............2.2.2.............2.2.3......

.........2.2.2.............1.4.4.............2.2.2.............2.3.3....

...........2.3.3.............4.4.4.............3.3.3.............3.3.3..

.............3.4.4.............3.4.4.............3.3.4.............3.4.4

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...1.1.2.............1.1.2.............1.1.2.............1.1.2..........

.....2.2.2.............2.2.2.............1.1.1.............2.2.2........

.......2.2.2.............2.2.2.............1.1.1.............2.2.2......

.........2.2.4.............2.2.3.............1.1.1.............2.4.4....

...........2.4.4.............2.3.3.............1.1.3.............4.4.4..

.............3.4.4.............3.4.4.............3.3.4.............3.4.4

Sequence in context: A138564 A158728 A152101 this_sequence A153223 A157569 A085799

Adjacent sequences: A165386 A165387 A165388 this_sequence A165390 A165391 A165392

nonn

Ron Hardin (rhhardin(AT)att.net) Sep 17 2009