OFFSET
1,1
COMMENTS
Column 4 of A216663
EXAMPLE
Some solutions for n=2
..0..1..2..3....0..1..2..1....0..1..2..1....0..1..2..3....0..1..2..3
..3..2..4..0....3..4..5..3....3..2..3..0....4..0..5..0....1..4..5..6
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin Sep 13 2012
STATUS
approved