OFFSET
1,1
COMMENTS
Column 3 of A189951
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..200
EXAMPLE
Some solutions with n=4
.-3....3....1...-1....3....3...-1....1....3...-3...-3....1....2....2....3...-3
.-1...-2....2...-2....2....2...-3...-3...-3....3....1....3...-3...-1...-3...-2
..3....3...-3....2...-1...-1....1...-2....1....3...-2...-3...-2....1....1....1
..1....2...-2....1...-2...-1....1....2....1....3....3...-2...-1....1...-3....2
.-2...-2...-3...-3....1...-3....3...-2....1...-3....2....1....3....1....2....1
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin May 02 2011
STATUS
approved