OFFSET
1,1
COMMENTS
Diagonal of A240250
EXAMPLE
Some solutions for n=4
..2..1..1..1....2..3..3..3....3..1..3..2....3..1..1..2....2..3..3..3
..3..0..2..2....1..0..0..2....2..0..0..1....2..0..3..3....1..0..2..1
..2..0..1..2....2..0..1..2....2..3..0..2....3..0..1..2....1..2..0..2
..2..0..1..2....2..0..3..2....2..3..0..2....3..2..0..2....2..0..0..3
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin, Apr 03 2014
STATUS
approved