OFFSET
1,1
COMMENTS
Column 4 of A219373
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..90
EXAMPLE
Some solutions for n=3
..1..1..2..3....1..1..2..2....0..0..3..3....0..0..2..2....0..0..0..0
..1..0..0..2....1..1..1..0....0..1..1..3....0..0..0..3....0..0..0..1
..0..0..0..0....3..1..0..0....2..1..3..3....3..0..3..3....0..2..2..3
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin Nov 19 2012
STATUS
approved