OFFSET
1,2
COMMENTS
Column 6 of A199530
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..200
EXAMPLE
Some solutions for n=5
.-3...-3....3...-1...-2...-5...-4....4...-5....0...-3....2...-2....4....4....5
..1....1....4...-1....3...-1....3...-1...-2...-2....2....3....3....1...-1...-3
..1....5...-3....2...-5....0...-2...-2....0....4...-6...-5...-3....0....4....1
.-5....2....0....1....1....5....6...-3....6...-3....4...-3....1...-4...-5....0
..6...-5...-4...-1....3....1...-3....2....1....1....3....3....1...-1...-2...-3
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin Nov 07 2011
STATUS
approved