OFFSET
1,1
COMMENTS
Column 4 of A226410
EXAMPLE
Some solutions for n=3
.-2....1...-1...-3...-4...-1...-3...-3...-3...-4...-4...-1...-4...-1...-3...-4
..1....3....0....0...-4...-1...-1....2....1...-4....3....0...-3....0....0...-1
..4....3....4....3....3....0...-1....4....3....1....4....3...-3....1....1....3
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin Jun 06 2013
STATUS
approved