OFFSET
1,1
COMMENTS
Column 2 of A188249
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..200
EXAMPLE
Some solutions for n=4
.-2...-1...-1....2....2...-1....1...-1...-2....1....1...-1....1...-1....2...-2
..2....2...-1....1....1....2...-1....2....2...-2...-1....1....1....2....2....1
..1....1....1...-1....1....1....1....2....1...-1...-1....1...-2...-2...-1....2
.-1....1....2....1...-2...-2....2...-1....2....2...-2...-1...-2...-2....2...-1
.-1....1...-2....2....1...-2...-1...-2....2....2....2....1....1...-2....1....2
.-2...-2...-1...-1....1....1...-2....1...-2...-1....1....2...-1....1...-2....2
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin Mar 25 2011
STATUS
approved