OFFSET
1,2
COMMENTS
Row 4 of A212943
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..18
EXAMPLE
Some solutions for n=4
..3..3..2..1....1..3..2..1....2..1..1..1....3..3..0..0....0..0..1..0
..3..2..2..2....1..1..0..3....0..2..1..3....3..3..3..2....2..2..0..1
..2..3..2..2....2..3..3..0....3..1..2..0....1..0..1..0....3..2..0..0
..3..1..1..2....1..0..3..0....2..2..1..2....1..1..0..3....0..0..1..0
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin May 31 2012
STATUS
approved