OFFSET
1,1
COMMENTS
Column 3 of A273964.
EXAMPLE
Some solutions for n=4
..0..1..2. .0..1..1. .0..1..2. .0..0..1. .0..0..1. .0..1..2. .0..1..2
..3..0..0. .0..2..3. .3..1..2. .2..3..0. .2..2..1. .3..0..1. .0..3..3
..3..2..3. .2..1..1. .1..0..2. .2..1..3. .1..3..2. .3..2..3. .0..2..1
..2..1..0. .2..3..3. .2..3..0. .0..2..1. .0..0..2. .3..1..2. .3..0..2
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin, Jun 05 2016
STATUS
approved