1,2

Diagonal of A239986

Table of n, a(n) for n=1..8.

Some solutions for n=4

..3..0..0..0....3..0..0..0....3..0..0..0....3..0..0..0....3..0..0..0

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

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

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

Sequence in context: A290758 A290769 A213794 * A261361 A114317 A168320

Adjacent sequences: A239976 A239977 A239978 * A239980 A239981 A239982

nonn

R. H. Hardin, Mar 30 2014

approved