OFFSET
1,1
COMMENTS
Diagonal of A232941.
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..21
EXAMPLE
Some solutions for n=5
..0..0..0..0..1....1..2..2..2..2....2..2..2..2..1....0..1..0..0..0
..0..1..0..0..0....2..2..2..2..2....1..2..2..2..2....0..0..0..0..0
..0..0..1..0..0....2..1..2..2..2....2..2..2..2..2....1..0..1..0..0
..0..0..0..0..1....2..2..1..2..2....1..2..2..2..2....0..0..0..0..0
..1..0..0..0..0....2..2..2..1..2....2..1..2..1..2....1..0..1..0..0
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin, Dec 02 2013
STATUS
approved