1,2

Diagonal of A217273

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

Some solutions for n=3

..1..1..2....2..1..1....0..0..1....2..1..1....0..2..1....0..1..2....1..1..0

..1..0..2....2..1..0....3..1..2....1..0..1....1..0..1....1..1..3....1..0..0

..1..1..0....0..2..0....2..0..0....1..2..0....1..1..2....0..0..1....1..3..2

Sequence in context: A120347 A230172 A231191 * A300594 A203649 A187131

Adjacent sequences: A217264 A217265 A217266 * A217268 A217269 A217270

nonn,hard,more

R. H. Hardin, Sep 29 2012

approved