OFFSET
1,1
COMMENTS
Row 4 of A269336.
EXAMPLE
Some solutions for n=3
..2..3..0. .2..1..1. .0..3..1. .1..2..3. .2..0..2. .0..1..1. .2..0..3
..3..2..1. .3..0..0. .2..0..2. .3..2..3. .1..3..1. .2..2..2. .1..3..3
..3..1..2. .0..1..3. .1..1..0. .2..1..0. .0..3..2. .0..3..3. .0..2..0
..1..0..0. .3..2..2. .3..2..3. .0..1..0. .1..3..0. .1..3..0. .1..2..1
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin, Feb 24 2016
STATUS
approved