OFFSET
1,1
COMMENTS
Diagonal of A207050.
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..28
EXAMPLE
Some solutions for n=4
..2..0..0..1..1....2..2..0..0..0....0..0..1..1..0....1..2..2..2..1
..2..0..0..0..1....2..2..2..0..0....0..1..1..1..2....2..2..2..0..0
..2..2..0..0..0....1..2..2..2..0....1..1..1..2..2....2..2..0..0..0
..2..2..2..0..0....1..1..2..2..2....1..1..2..2..2....2..0..0..0..2
..0..2..2..2..0....1..1..1..2..2....1..2..2..2..1....2..0..0..2..2
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin, Feb 14 2012
STATUS
approved