OFFSET
1,1
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..51
EXAMPLE
Some solutions for n=5
..2...-3...-2...-1...-1....0...-2....0...-1...-1....1....3....2....3....1....1
..3....0...-1....0....3...-3...-1....1....0....2....3....0....0....0...-3....0
..0....3....0....3....2...-2....0...-2....2....1....0...-1....3...-2....1....1
.-1....0....1....2....1....1...-1....1....3...-2....3...-2....0....0....3....2
..0...-3....2....1....2....0...-2...-2....1...-1....1....1...-3...-3....1....1
..1....1....1...-2....1...-3...-1....1....2....0....3....0....0....0...-2....0
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin Apr 20 2012
STATUS
approved