OFFSET
1,2
COMMENTS
Column 3 of A199847.
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..200
EXAMPLE
Some solutions for n=6
..0...-1....3....1....3....0....3....3....1....1....2....3....0....1....0....2
..1....0....2....1....0....0....0....0....1....1....2....1....1....0....0....3
..1....1....2...-1...-2....0....1....1....0...-1....2....2....2....1....1....1
.-1....1...-2....0...-1....0....0...-1....0...-1...-1...-1...-1....2....2...-1
..0....0...-3...-1....0....1...-2...-2....0....0...-2...-3....0...-2...-1...-2
.-1...-1...-2....0....0...-1...-2...-1...-2....0...-3...-2...-2...-2...-2...-3
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin, Nov 11 2011
STATUS
approved