OFFSET
1,1
COMMENTS
Column 3 of A205170
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..210
FORMULA
Empirical: a(n) = 224*a(n-1) -2803*a(n-2) +11196*a(n-3) -16677*a(n-4) +9438*a(n-5) -1728*a(n-6)
EXAMPLE
Some solutions for n=4
..0..0..1..0....0..1..1..0....0..0..0..0....0..0..1..2....0..0..0..0
..2..3..1..0....0..0..2..0....0..1..1..0....0..3..3..0....0..1..1..0
..0..1..1..1....0..2..1..1....2..2..2..2....1..0..1..2....2..0..1..0
..1..2..2..3....3..1..0..0....3..2..3..3....1..1..1..0....2..0..1..2
..0..3..3..0....1..0..2..3....1..1..2..1....1..0..3..2....1..3..0..0
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin Jan 22 2012
STATUS
approved