OFFSET
1,1
COMMENTS
Column 4 of A226340
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..52
EXAMPLE
Some solutions for n=3
.-2...-1...-3...-1...-1...-2...-3...-3....0...-4....1...-1...-3....3...-1...-2
.-2....2...-3...-1...-1...-1....2....0....1....2....2....4....1....3....0....2
..1....4...-3....1....0....4....2....2....1....3....3....4....3....4....4....3
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin Jun 04 2013
STATUS
approved