OFFSET
1,1
COMMENTS
Column 1 of A232391
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..210
FORMULA
Empirical: a(n) = 3*a(n-1) +5*a(n-2) -9*a(n-3) -14*a(n-4) -12*a(n-5) -3*a(n-6) +23*a(n-7) +43*a(n-8) +51*a(n-9) +27*a(n-10) +a(n-11) -12*a(n-12) -6*a(n-13) -a(n-14) +a(n-15)
EXAMPLE
Some solutions for n=7
..1..0....1..2....0..3....1..0....1..2....3..0....3..0....1..2....3..2....2..1
..2..1....0..3....1..2....2..3....0..3....2..1....2..1....0..3....1..0....3..0
..3..2....2..0....0..1....1..0....1..0....3..0....0..2....1..2....2..1....2..1
..1..0....1..3....3..0....3..1....2..3....2..1....3..1....3..1....3..2....0..2
..2..1....0..2....2..3....2..3....0..1....3..2....2..0....0..3....0..3....3..1
..3..0....1..0....1..2....1..0....2..3....0..1....1..3....2..1....1..2....2..0
..1..2....3..2....0..1....3..2....0..1....3..2....0..2....0..2....0..1....3..2
..0..3....0..1....3..2....0..1....3..2....0..1....1..0....1..3....2..3....0..1
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin, Nov 23 2013
STATUS
approved