OFFSET
1,1
COMMENTS
Column 2 of A239424
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..210
FORMULA
Empirical: a(n) = 2*a(n-1) +11*a(n-2) -a(n-3) -39*a(n-4) -40*a(n-5) +3*a(n-6) +13*a(n-7) +64*a(n-8) +162*a(n-9) -220*a(n-10) +122*a(n-11) -38*a(n-12) -82*a(n-13) +60*a(n-14) for n>15
EXAMPLE
Some solutions for n=5
..1..2....2..1....1..3....1..2....1..2....2..3....3..1....1..3....1..3....2..3
..3..0....1..0....3..0....2..0....2..3....1..0....1..0....3..2....3..0....1..0
..3..1....1..2....3..0....1..0....2..0....1..0....2..0....3..2....2..0....1..0
..2..0....3..0....1..2....1..0....3..0....2..0....1..0....1..2....3..1....3..0
..2..0....1..2....2..0....2..3....1..2....3..1....1..0....1..2....3..2....2..1
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin, Mar 17 2014
STATUS
approved