OFFSET
1,1
COMMENTS
Diagonal of A209374
EXAMPLE
Some solutions for n=5
..3..1..2..1..3....2..2..3..1..2....2..2..3..1..3....1..3..1..2..2
..1..3..1..3..2....1..3..1..3..2....1..3..1..3..1....2..1..3..1..3
..2..2..3..1..3....3..1..2..1..3....3..1..2..2..3....2..3..1..3..1
..1..3..1..2..1....1..3..1..3..1....1..3..1..3..1....3..1..3..1..3
..3..1..3..2..3....2..2..3..1..2....3..1..3..1..3....1..2..2..3..1
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin Mar 07 2012
STATUS
approved