OFFSET
1,1
COMMENTS
Column 6 of A252523.
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..210
FORMULA
Empirical: a(n) = 123*a(n-3) -4692*a(n-6) +69418*a(n-9) -496012*a(n-12) +1948488*a(n-15) -4564660*a(n-18) +6732956*a(n-21) -6502868*a(n-24) +4253029*a(n-27) -1930703*a(n-30) +601744*a(n-33) -118886*a(n-36) +12592*a(n-39) -528*a(n-42) for n>50.
EXAMPLE
Some solutions for n=4
..3..3..2..3..0..2..3..3....3..2..3..3..2..3..3..2....3..2..3..3..2..3..3..2
..0..3..2..3..3..2..0..3....2..1..2..2..1..2..2..1....2..1..2..2..1..2..2..1
..2..2..1..2..2..1..2..2....3..2..0..3..2..3..3..2....3..2..3..3..2..3..3..2
..3..3..2..0..3..2..3..3....3..2..3..3..2..3..3..2....3..2..3..0..2..3..3..2
..3..3..2..3..3..2..3..3....2..1..2..2..1..2..2..1....2..1..2..2..1..2..2..1
..2..2..1..2..2..1..2..2....3..2..3..0..2..3..3..2....3..2..0..3..2..3..0..2
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin, Dec 18 2014
STATUS
approved