OFFSET
1,1
COMMENTS
Column 4 of A190071
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..200
EXAMPLE
Some solutions for n=5
..3...-2....2....3...-1....3...-1...-2...-4...-1...-1....3...-1....1...-3....4
.-1....2....2....3...-2...-3....2...-4...-4....2...-4....3....2....4....4...-2
.-2....3...-4...-3...-4...-1....3...-1....3....4....1....3...-4...-3...-3....3
.-2....3....4...-2...-4....2....1....2....1....2....2...-3....3....3...-4....2
.-1...-2....3....3....2...-4...-1...-4...-4....2....2....3....1...-4...-2....1
..3...-4...-2...-2...-2....4....1....1....3...-1....1....4....2...-2....2...-4
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin May 04 2011
STATUS
approved