OFFSET
1,1
COMMENTS
Column 7 of A226422
EXAMPLE
Some solutions for n=3
.-5...-5...-5...-3...-7...-4...-6...-6...-3...-7...-3...-6...-6...-6...-3...-5
.-3....0....0....5...-2....2...-6...-1...-3....1....1...-6....1...-5...-2...-3
..5....2....7....5....7....3....5....0....0....7....2....3....3...-2...-2....2
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin Jun 06 2013
STATUS
approved