OFFSET
1,3
COMMENTS
Row 4 of A221890
EXAMPLE
Some solutions for n=4
..0..2..0..1....0..3..2..1....1..2..2..1....0..2..2..0....0..2..3..1
..1..1..3..0....0..1..2..0....0..1..1..0....0..2..2..1....0..2..1..0
..1..2..2..1....0..1..1..1....1..2..1..0....0..1..2..1....0..1..1..0
..0..1..1..0....0..1..3..0....0..1..2..1....0..1..2..0....1..2..2..0
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin Jan 30 2013
STATUS
approved