OFFSET
1,1
COMMENTS
Column 2 of A201958.
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..68
EXAMPLE
Some solutions for n=4
..2..3...-3.-3...-2.-3...-2..3...-2..1....2.-3....2.-3....2..0...-3.-1....1.-2
..0..0....2..2....1..1....0..0...-2..0....1..1....3.-3....0.-1....3..0....0..0
.-2.-2...-1.-1....2..2....1..1....2..0....0..0....3..0....0.-1....3..0....0..0
.-2..1....3..1....0.-1...-1.-2....2.-1...-1..0...-2..0....3.-3...-2..0....3.-2
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin, Dec 06 2011
STATUS
approved