OFFSET
1,2
COMMENTS
Column 5 of A231285
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..210
FORMULA
Empirical: a(n) = 30*a(n-1) +422*a(n-2) +112*a(n-3) -13713*a(n-4) -12558*a(n-5) +109956*a(n-6) -205672*a(n-7) +110336*a(n-8) +3309440*a(n-9) -849920*a(n-10) for n>11
EXAMPLE
Some solutions for n=3
..0..1..2..3..0....0..1..2..0..1....0..1..2..3..2....0..1..2..3..0
..0..1..2..1..2....0..3..0..2..3....0..1..0..2..1....1..2..3..1..0
..0..1..0..3..2....2..1..1..0..3....0..3..3..0..3....1..0..2..3..2
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin, Nov 06 2013
STATUS
approved