OFFSET
1,1
COMMENTS
Row 4 of A231855
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..210
EXAMPLE
Some solutions for n=3
..0..0..1....0..0..1....0..0..2....0..0..1....0..2..2....0..0..2....0..0..0
..0..1..0....0..1..1....0..2..0....2..2..2....2..2..0....0..1..1....0..0..0
..0..0..0....1..2..1....1..1..0....0..0..2....2..0..1....1..1..0....0..1..2
..1..0..0....0..1..1....2..0..0....1..2..2....2..2..2....0..0..1....2..0..0
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin, Nov 14 2013
STATUS
approved