OFFSET
1,1
COMMENTS
Row 4 of A267072.
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..20
EXAMPLE
Some solutions for n=4
..0..2..1..0....0..0..3..1....0..3..1..0....0..0..2..1....0..2..0..2
..3..2..0..2....1..1..1..3....1..3..2..1....2..2..1..0....2..1..3..1
..2..1..0..3....3..2..0..2....1..3..2..0....0..3..1..1....2..0..3..1
..1..1..3..3....2..0..3..2....0..3..2..2....3..3..3..2....0..3..3..1
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin, Jan 10 2016
STATUS
approved