OFFSET
1,2
COMMENTS
Row 4 of A265241.
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..30
EXAMPLE
Some solutions for n=3
..0..0..1....0..0..1....0..1..2....0..1..0....0..1..1....0..1..2....0..0..0
..2..2..3....2..3..2....0..1..3....0..2..3....2..2..2....3..1..0....1..2..3
..3..1..1....1..3..2....0..2..3....1..2..2....3..3..3....0..2..3....1..2..2
..0..2..3....1..0..3....3..1..2....3..3..1....1..0..0....3..2..1....1..3..3
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin, Dec 06 2015
STATUS
approved