OFFSET
1,1
COMMENTS
Column 2 of A222847
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..22
EXAMPLE
Some solutions for n=3
..0..0..1....0..0..1....0..0..1....0..0..2....0..0..1....0..1..2....0..0..1
..0..0..1....1..1..2....0..1..2....0..1..1....0..1..2....0..2..1....0..1..1
..1..0..2....0..2..2....1..1..2....0..0..2....0..2..1....1..1..2....1..0..2
..1..2..2....1..1..2....1..1..2....1..1..2....1..2..2....1..2..2....0..2..2
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin Mar 07 2013
STATUS
approved