OFFSET
1,1
COMMENTS
Diagonal of A252278
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..17
EXAMPLE
Some solutions for n=4
..2..3..3..2..3..3....3..2..0..3..2..3....3..3..2..3..0..2....2..1..2..2..1..2
..1..2..2..1..2..2....0..2..3..3..2..0....2..2..1..2..2..1....3..2..3..0..2..3
..2..3..3..2..3..3....2..1..2..2..1..2....0..3..2..3..3..2....0..2..3..3..2..0
..2..3..0..2..3..0....3..2..3..3..2..3....3..3..2..3..0..2....2..1..2..2..1..2
..1..2..2..1..2..2....3..2..3..0..2..3....2..2..1..2..2..1....3..2..3..3..2..3
..2..3..3..2..3..3....2..1..2..2..1..2....3..3..2..3..3..2....3..2..3..3..2..3
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin, Dec 16 2014
STATUS
approved