OFFSET
1,2
COMMENTS
Column 5 of A188333
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..24
EXAMPLE
Some solutions for n=6
.-7...-7...-6...-8...-8...-6...-9...-8...-8...-9...-8...-8...-7...-8...-9...-7
.-6...-5...-6...-3...-5...-6...-7...-6...-5...-6...-6...-8...-3...-8...-5...-3
.-1...-2...-4...-2...-4...-6....1....1...-2....1....2...-1...-1....2....3....1
..4....1...-2....2....4....3....3....2...-1....3....3....5...-1....2....3....2
..5....5....9....4....4....6....5....4....7....3....4....6....5....5....4....2
..5....8....9....7....9....9....7....7....9....8....5....6....7....7....4....5
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin Mar 28 2011
STATUS
approved