OFFSET
1,2
COMMENTS
Diagonal of A231855
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..11
EXAMPLE
Some solutions for n=3
..0..2..1....0..2..2....0..2..1....0..0..0....0..2..2....0..0..2....0..0..0
..2..0..0....2..0..0....2..1..1....1..0..0....2..0..1....1..2..0....1..0..2
..0..1..1....1..1..2....1..1..1....1..2..2....1..2..0....1..1..2....2..2..2
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin, Nov 14 2013
STATUS
approved