OFFSET
1,2
COMMENTS
Column 5 of A239986
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..210
EXAMPLE
Some solutions for n=4
..3..0..0..0..0....3..0..0..0..0....3..0..0..0..0....3..0..0..0..0
..2..3..0..0..0....2..1..0..0..0....2..3..0..3..3....2..3..0..3..3
..2..0..0..3..0....2..0..3..3..3....2..0..0..3..3....2..0..1..2..2
..2..0..0..0..1....3..0..0..2..2....3..2..0..2..1....2..0..0..1..1
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin, Mar 30 2014
STATUS
approved