OFFSET
1,2
COMMENTS
Column 7 of A208825.
EXAMPLE
Some solutions for n=3:
.-3...-3....0...-5...-2...-5...-7...-6...-4...-6...-4...-6...-3...-7...-2...-7
..0...-3....0....2....0....0....0....1...-3...-1...-2....3...-1....3...-2....2
..3....6....0....3....2....5....7....5....7....7....6....3....4....4....4....5
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin, Mar 01 2012
STATUS
approved