OFFSET
1,1
COMMENTS
Column 2 of A252615
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..210
FORMULA
Empirical: a(n) = 37*a(n-3) -445*a(n-6) +2151*a(n-9) -4973*a(n-12) +7261*a(n-15) -8366*a(n-18) +5776*a(n-21) -1440*a(n-24) for n>33
EXAMPLE
Some solutions for n=4
..1..2..2..1....2..3..0..2....0..3..2..3....3..3..2..0....2..3..3..2
..0..2..3..3....2..1..2..2....1..2..2..1....1..2..2..1....2..1..2..2
..3..3..2..0....0..3..2..0....0..2..3..0....3..2..3..0....0..3..2..0
..1..2..2..1....2..3..0..2....0..3..2..0....3..0..2..3....2..3..0..2
..0..2..3..3....2..1..2..0....1..2..2..1....1..2..2..1....2..1..2..2
..0..3..2..3....3..3..0..0....3..2..3..3....3..2..0..3....3..0..2..3
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin, Dec 19 2014
STATUS
approved