OFFSET
1,2
COMMENTS
Column 8 of A183917
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..63
EXAMPLE
Some solutions for n=4
.-6...-7...-7...-3...-7...-7...-4...-4...-4...-1...-2...-8...-6...-4...-5...-8
.-3...-5....2...-1....0....1...-2....1...-3...-1...-2...-1....1....0...-1....1
..4....4....2....0....0....1....0....1....3....0....1....4....2....1....1....3
..5....8....3....4....7....5....6....2....4....2....3....5....3....3....5....4
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin Jan 07 2011
STATUS
approved