OFFSET
1,1
COMMENTS
Column 4 of A221925
EXAMPLE
Some solutions for n=3
..0..0..0..1....0..2..1..3....0..4..0..3....0..1..2..0....0..3..0..1
..0..5..0..0....0..0..0..1....0..1..0..0....0..2..0..1....0..2..1..1
..1..3..0..2....2..1..1..1....0..3..1..0....1..0..3..2....3..0..1..0
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin Jan 31 2013
STATUS
approved