OFFSET
1,1
COMMENTS
Column 7 of A226340
EXAMPLE
Some solutions for n=3
.-4...-5...-1....4...-7...-2...-5...-6...-5...-7...-7....5...-3....1...-7...-7
..0...-2....5....5...-3...-2...-3....1...-5...-6...-4....7...-3....7...-5...-1
..7....7....5....7...-2....3...-1....7....7....4....3....7...-3....7...-2....3
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin Jun 04 2013
STATUS
approved