OFFSET
1,1
COMMENTS
Column 4 of A232065
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..210
FORMULA
Empirical: a(n) = 4*a(n-1) +a(n-2) -4*a(n-4) -3*a(n-5) +a(n-7) +3*a(n-8) -a(n-11)
EXAMPLE
Some solutions for n=7
..1..0..1..2....0..1..0..1....1..2..1..0....2..0..1..2....2..1..2..1
..2..1..0..1....1..2..1..2....0..1..0..2....0..2..0..1....1..2..1..0
..1..2..1..0....2..1..2..1....1..0..2..1....1..0..1..0....2..1..2..1
..2..0..2..1....1..0..1..2....2..1..0..2....2..1..2..1....1..2..1..0
..0..1..0..2....2..1..0..1....1..2..1..0....0..2..1..2....2..1..2..1
..1..2..1..0....1..2..1..2....2..1..2..1....1..0..2..1....1..2..1..0
..2..1..0..2....0..1..2..1....1..0..1..2....2..1..0..2....0..1..2..1
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin, Nov 17 2013
STATUS
approved