OFFSET
1,2
COMMENTS
Diagonal of A212943.
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..17
EXAMPLE
Some solutions for n=4
..1..3..0..1....1..3..2..1....2..1..1..1....3..3..2..1....0..0..0..3
..0..0..1..0....1..1..0..3....0..2..1..3....3..2..2..2....0..1..1..2
..0..1..1..3....2..3..3..0....3..1..2..0....2..3..2..2....0..2..2..1
..3..0..3..1....1..0..3..0....2..2..1..2....3..1..1..2....2..1..0..2
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin, May 31 2012
STATUS
approved