OFFSET
1,1
COMMENTS
Column 7 of A189951
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..96
EXAMPLE
Some solutions with n=3
.-5....7....1...-6...-6....6...-1....4....1....2...-4...-3....7....1...-1...-3
.-2....6....3....6....2....1....2...-7....7...-6...-4....2...-6...-3....3....1
..1...-1...-2...-5...-6...-7...-7...-5...-2....4...-2...-4...-1...-3....1...-3
.-7...-3...-4...-2...-4...-3....6...-3...-6...-1....2...-3....3....2....5....2
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin May 02 2011
STATUS
approved