OFFSET
1,1
COMMENTS
Row 2 of A223453.
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..210
EXAMPLE
Some solutions for n=3
..0..0....0..0....1.-3....3.-3...-2.-3....1..0....0.-3...-2..3....1..0...-1.-2
.-1..1...-2..1....0..0....2.-2....2..3...-3..0....0..1...-2..3....1..0....1..2
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin, Apr 09 2013
STATUS
approved