OFFSET
1,2
COMMENTS
Column 3 of A188181.
Apparently a(n) = A046919(n+3) for 1 <= n <= 30. - Georg Fischer, Oct 24 2018
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..30
EXAMPLE
Some solutions for n=5
.-6...-5...-3...-4...-6...-4...-5...-4...-5...-3...-5...-6...-6...-6...-6...-5
.-2...-1...-2...-3...-3...-2...-4...-3...-3...-2...-3...-1...-1...-3...-2...-3
..0....0...-1...-1....0....0....0....0....0...-1....0....0....0....1....1....1
..2....1....2....3....3....2....3....1....3....1....2....3....2....3....3....2
..6....5....4....5....6....4....6....6....5....5....6....4....5....5....4....5
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin Mar 23 2011
STATUS
approved