OFFSET
1,2
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..11
EXAMPLE
Some solutions for n=4
..0..0..0..0....0..0..1..3....0..2..2..2....2..2..2..2....0..2..2..3
..0..2..3..1....0..0..3..0....2..2..3..0....2..0..3..1....2..0..0..2
..0..3..3..1....1..3..2..1....2..3..2..3....2..3..2..1....2..0..0..1
..0..1..1..1....3..0..1..1....2..0..3..2....2..1..1..1....3..2..1..1
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin Mar 31 2012
STATUS
approved