OFFSET
1,1
COMMENTS
Column 6 of A231023
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..102
EXAMPLE
Some solutions for n=2
..x..0..x..2..x..2..x..0..x....x..0..x..2..x..2..x..0..x
..3..x..1..x..3..x..1..x..3....1..x..3..x..3..x..1..x..3
..x..3..x..1..x..0..x..0..x....x..2..x..0..x..2..x..2..x
..0..x..2..x..0..x..2..x..3....1..x..3..x..1..x..3..x..1
..x..1..x..1..x..3..x..2..x....x..0..x..0..x..0..x..2..x
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin, Nov 03 2013
STATUS
approved