OFFSET
1,1
COMMENTS
Diagonal of A239256
EXAMPLE
Some solutions for n=3
..0..4..3....3..2..4....0..4..2....0..2..0....2..4..4....0..0..0....2..0..2
..0..3..3....0..4..4....0..2..1....0..4..3....2..1..2....3..2..3....2..4..4
..2..0..0....0..4..3....0..3..0....3..3..3....2..0..0....2..0..1....3..3..1
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin, Mar 13 2014
STATUS
approved