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