OFFSET
1,1
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..32
EXAMPLE
Some solutions for n=5:
..0..0..0..0..1..1..1....0..0..0..1..1..1..2....0..0..0..0..0..1..2
..0..0..1..1..1..1..3....0..0..1..1..1..1..3....0..0..1..1..1..2..2
..0..0..1..1..2..2..3....0..1..1..2..2..2..3....0..1..1..1..2..2..3
..0..2..2..2..3..3..3....0..2..2..2..2..2..3....0..1..1..2..2..2..3
..2..2..2..2..3..3..3....0..3..3..3..3..3..3....3..3..3..3..3..3..3
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin, Dec 01 2011
STATUS
approved