OFFSET
1,2
COMMENTS
Column 4 of A200038
EXAMPLE
Some solutions for n=6
..4...-4....2....3....4....2....2...-1...-3....1....4....3...-2...-3....4....4
..2...-2...-3....1....2....4...-1...-3....4...-3...-3...-2....3...-2...-4...-1
..3....4....1....3...-3...-4....4....4....3....2...-4...-1...-4...-3...-1...-4
.-3....1...-2...-2....3....1...-3...-4...-4...-4....4....4...-1....3....4....3
.-4....2....3...-3...-2...-2....1....1...-2....1....3...-1....3....1...-2....1
.-2...-1...-1...-2...-4...-1...-3....3....2....3...-4...-3....1....4...-1...-3
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin Nov 12 2011
STATUS
approved