OFFSET
1,1
COMMENTS
Column 3 of A252523
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..210
FORMULA
Empirical: a(n) = 32*a(n-3) -310*a(n-6) +1093*a(n-9) -1724*a(n-12) +1309*a(n-15) -476*a(n-18) +82*a(n-21) -5*a(n-24) for n>29
EXAMPLE
Some solutions for n=4
..3..0..2..3..0....3..3..2..3..3....0..3..2..3..0....3..0..2..3..3
..2..2..1..2..2....2..2..1..2..2....2..2..1..2..2....3..3..2..3..3
..0..3..2..3..3....0..3..2..3..3....3..3..2..3..3....2..2..1..2..2
..3..3..2..3..0....3..3..2..3..3....0..3..2..0..3....0..3..2..3..0
..2..2..1..2..2....2..2..1..2..2....2..2..1..2..2....3..3..2..3..3
..3..0..2..3..3....3..3..2..3..0....3..3..2..3..3....2..2..1..2..2
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin, Dec 18 2014
STATUS
approved