OFFSET
1,3
COMMENTS
Diagonal of A195962
EXAMPLE
Some solutions for n=5
..1..1..1..3..1....1..2..3..2..1....1..1..1..1..1....1..3..2..2..1
..2..2..1..1..1....1..2..4..2..1....3..2..2..2..3....1..4..3..3..1
..3..2..1..1..3....1..2..2..2..1....2..2..3..2..2....1..2..2..2..1
..2..2..1..1..1....1..4..3..3..1....3..4..3..4..3....1..2..4..2..1
..1..1..1..3..1....1..3..2..2..1....1..1..1..1..1....1..2..3..2..1
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin Sep 25 2011
STATUS
approved