OFFSET
1,1
COMMENTS
Diagonal of A229105.
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..1..2....0..0..1..1....0..0..0..0....0..0..1..2....0..0..0..0
..0..0..3..1....0..2..1..2....0..0..1..0....0..0..0..1....0..1..1..3
..2..0..0..2....0..1..2..3....3..2..0..3....3..2..2..2....1..0..1..0
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin, Sep 13 2013
STATUS
approved