OFFSET
1,2
COMMENTS
Column 8 of A188211
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..25
EXAMPLE
Some solutions for n=3
.-3...-7...-4...-5...-2...-4...-5...-9...-8...-9...-6...-3...-4...-7...-3...-6
.-3....0...-3...-2...-2....1...-4....2....1....3....2...-1...-1....1....1....1
..6....7....7....7....4....3....9....7....7....6....4....4....5....6....2....5
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin Mar 24 2011
STATUS
approved