OFFSET
1,1
COMMENTS
Column 4 of A207283
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..210
EXAMPLE
Some solutions for n=4
..2..0..2..0....3..0..1..1....2..1..0..0....3..3..0..1....3..0..0..1
..1..0..3..2....0..3..2..0....3..0..0..1....3..2..1..1....3..2..2..0
..3..1..3..1....1..2..0..0....1..2..3..3....2..1..1..0....2..2..1..3
..1..3..2..0....1..0..0..1....3..2..0..0....2..0..3..0....0..1..1..3
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin Feb 16 2012
STATUS
approved