OFFSET
1,2
COMMENTS
Column 4 of A188333
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..29
EXAMPLE
Some solutions for n=6
.-8...-8...-8...-6...-5...-7...-4...-7...-5...-7...-8...-5...-4...-3...-5...-6
.-8...-5...-7...-4...-4...-7...-3...-5...-5...-4...-6...-2...-4...-2...-5...-6
.-2...-5...-1...-4...-4....1...-1...-5...-4...-3...-2....1...-3...-2...-5...-4
..3....5....4....2...-1....1...-1....4....1....4....3....1....1...-2....4....4
..7....5....4....4....7....5....1....6....5....4....5....1....5....4....4....4
..8....8....8....8....7....7....8....7....8....6....8....4....5....5....7....8
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin Mar 28 2011
STATUS
approved