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