OFFSET
1,1
COMMENTS
Column 1 of A237797
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..25
EXAMPLE
Some solutions for n=2
..2..1..0....0..2..0....2..1..0....0..1..1....1..2..1....1..0..2....0..1..0
..1..0..1....0..1..0....1..2..1....2..1..1....1..2..1....1..1..2....2..0..0
..1..1..2....0..0..2....1..1..1....1..1..1....1..1..2....1..1..0....0..0..0
..1..1..2....1..0..0....0..1..2....1..2..0....1..1..2....1..1..1....0..2..0
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin, Feb 13 2014
STATUS
approved