OFFSET

1,1

COMMENTS

Diagonal of A219373

EXAMPLE

Some solutions for n=3

..1..1..0....2..2..2....2..2..3....0..0..0....0..0..0....2..0..2....1..1..0

..1..0..0....2..2..3....2..0..3....0..0..2....0..0..0....0..0..0....1..0..0

..3..2..0....2..3..3....0..0..0....3..3..3....1..3..0....1..0..0....3..1..0

CROSSREFS

KEYWORD

nonn

AUTHOR

R. H. Hardin Nov 19 2012

STATUS

approved