OFFSET
1,1
COMMENTS
Row 4 of A226422
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..40
EXAMPLE
Some solutions for n=3
..1...-1...-2...-2...-2...-3...-3...-3...-1...-3....0...-1...-3...-1...-2...-1
..1...-1...-1...-2...-1...-3...-2....0....0...-2....0....2....1...-1...-2....0
..1....1....0...-1....0....1...-2....0....1....1....1....2....2....2...-2....0
..1....3....3....2....0....3....1....2....1....2....1....2....2....3....2....2
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin Jun 06 2013
STATUS
approved