OFFSET
1,2
COMMENTS
Diagonal of A202812
EXAMPLE
Some solutions for n=4
..0..0..0..0....0..0..0..0....0..0..0..0....0..0..0..0....0..0..0..0
..0..0..0..0....0..0..0..0....0..0..0..1....0..0..0..2....0..0..1..2
..0..0..0..0....0..0..0..2....0..0..2..2....0..1..2..2....0..0..1..3
..0..1..1..1....0..0..1..2....0..2..2..2....0..1..3..3....0..2..3..5
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin Dec 24 2011
STATUS
approved