OFFSET
1,1
COMMENTS
Row 4 of A266921.
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..20
EXAMPLE
Some solutions for n=5
..0..2..0..2..0....0..1..2..1..3....0..2..0..1..3....0..3..1..2..3
..3..0..2..0..2....2..0..2..0..1....0..2..3..1..3....0..1..3..1..2
..2..3..1..3..1....1..3..2..3..0....3..0..2..1..2....3..1..2..0..2
..1..3..1..3..1....1..3..0..2..3....1..3..1..0..2....2..3..1..0..0
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin, Jan 06 2016
STATUS
approved