1,1

Diagonal of A220044

Table of n, a(n) for n=1..6.

Some solutions for n=3

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

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

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

Sequence in context: A198159 A322659 A042537 * A132512 A203221 A284700

Adjacent sequences: A220035 A220036 A220037 * A220039 A220040 A220041

nonn

R. H. Hardin Dec 03 2012

approved