OFFSET
1,2
COMMENTS
Column 7 of A202006
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..28
EXAMPLE
Some solutions for n=4
.-1....3....6....4....4...-5....2...-2...-6....5...-1...-1....3....3...-5....0
.-1...-1....3....1...-7...-4....6....5...-4....7...-2....4...-4...-6....7....1
.-2....1....4...-4...-2....3...-7....2....6...-5...-2....2...-2...-5....2...-1
.-7...-2...-7...-5...-6...-1...-4...-3....0....0....1...-3....1....5....1...-1
..6...-3...-2....4....7....5...-4...-2....6...-5....6....0....0....4...-2....0
..5....2...-4....0....4....2....7....0...-2...-2...-2...-2....2...-1...-3....1
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin Dec 07 2011
STATUS
approved