OFFSET
1,1
COMMENTS
Row 7 of A189951
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..61
EXAMPLE
Some solutions with n=3
..1...-3....1....2...-1....3....2....2....3...-1....2...-1....1....2....1....2
..1...-3...-3...-3...-3...-3...-3....1....1...-3...-3....1....1....1...-3...-3
.-3...-2...-1....2...-3...-1...-2....2....1....3...-1....2....1....2....3...-2
..1....2...-1....1....3....1...-1...-1...-2....3....2...-3....3....1...-3...-3
.-3....3....3....1...-2...-3...-1...-1...-2....1...-1...-2...-2....1...-1....3
.-1...-3....3...-1...-2...-3....1...-3...-3...-2...-1...-3...-2...-1....3....3
.-3...-3...-3...-2...-2....2...-1....3....1....2...-1....1...-3...-1....3....2
.-2...-2...-1....1...-1...-2....3....1....3....1....3....1...-3...-3...-3...-2
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin May 02 2011
STATUS
approved