OFFSET
1,1
COMMENTS
Row 4 of A269505.
EXAMPLE
Some solutions for n=3
..3..0..0. .2..1..0. .2..2..0. .0..1..0. .0..2..0. .3..2..1. .0..2..1
..1..2..0. .2..2..0. .3..3..1. .1..3..0. .3..2..2. .0..3..2. .2..3..3
..1..2..1. .1..3..0. .0..3..2. .2..3..1. .1..3..1. .0..1..3. .2..3..1
..3..3..2. .1..3..3. .0..1..1. .3..2..2. .1..3..0. .2..1..0. .0..0..1
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin, Feb 28 2016
STATUS
approved