OFFSET
1,2
COMMENTS
Column 4 of A199847
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..200
EXAMPLE
Some solutions for n=6
..2....1....3....3....1....1....3....2....3...-1....3....4....0....2....2....3
..3....2....2....4...-1....2....2....3....0....0....1....3....0....2....0....4
..4....2....0...-1....0....2....2...-1....1....1....2....0....1....1....1...-1
.-2...-2....1....0....1....1....0...-1....2....1...-1...-2....2....2....1...-3
.-4...-2...-3...-2....1...-2...-3...-2...-2...-1...-1...-1...-1...-3...-1...-2
.-3...-1...-3...-4...-2...-4...-4...-1...-4....0...-4...-4...-2...-4...-3...-1
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin Nov 11 2011
STATUS
approved