OFFSET
1,2
COMMENTS
Column 7 of A183935
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..63
EXAMPLE
Some solutions for n=4
.-5...-2...-3...-3...-4...-6...-5...-3...-5...-3...-7...-4...-6...-3...-4...-1
.-2...-2...-1....0...-3....0....1...-2...-1...-3....1...-2...-1...-1...-2...-1
..1....0....0....0....2....0....1....1....0....3....3....0....2....2....1....1
..6....4....4....3....5....6....3....4....6....3....3....6....5....2....5....1
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin Jan 08 2011
STATUS
approved