OFFSET
1,2
COMMENTS
Column 2 of A222953
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..24
EXAMPLE
Some solutions for n=3
..3..3....2..2....2..1....2..3....3..1....1..1....2..1....1..0....2..0....3..0
..2..1....1..2....3..3....3..1....3..3....1..2....2..2....0..0....2..2....3..1
..0..3....1..3....1..2....1..0....0..1....1..3....2..0....0..2....2..1....3..3
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin Mar 10 2013
STATUS
approved