OFFSET
1,1
COMMENTS
Column 7 of A251876
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..210
FORMULA
Empirical: a(n) = 29*a(n-3) -168*a(n-6) for n>17
EXAMPLE
Some solutions for n=4
..1..2..0..1..2..3..1..2..0....2..2..2..2..2..2..2..2..2
..0..3..3..3..0..3..0..3..0....1..0..2..1..0..2..1..3..2
..2..1..0..2..1..3..2..1..0....3..1..2..0..1..2..0..1..2
..1..2..3..1..2..0..1..2..3....2..2..2..2..2..2..2..2..2
..3..0..3..0..3..0..3..0..3....1..3..2..1..0..2..1..3..2
..2..1..3..2..1..0..2..1..3....0..1..2..3..1..2..0..1..2
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin, Dec 10 2014
STATUS
approved