OFFSET
1,1
COMMENTS
Row 4 of A226410
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..43
EXAMPLE
Some solutions for n=3
..0...-1...-2...-2....1...-2...-1...-2...-2....0...-2...-3....1...-2...-1...-3
..1....0...-2...-2....2....0...-1...-2....0....0...-1...-1....1...-2....1...-2
..2....0...-2...-1....3....0....1...-2....0....2....0....2....2...-1....1....0
..3....3...-1...-1....3....1....1...-2....0....3....1....3....2....3....2....1
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin Jun 06 2013
STATUS
approved