OFFSET
1,1
COMMENTS
Column 3 of A241370
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..210
FORMULA
Empirical: a(n) = 15*a(n-1) +18*a(n-2) -8*a(n-3) -68*a(n-4) -164*a(n-5) -256*a(n-6) -176*a(n-7) +64*a(n-8)
EXAMPLE
Some solutions for n=4
..0..1..2....0..1..0....0..0..1....0..1..0....0..1..2....0..1..0....0..1..0
..0..0..1....2..0..1....0..0..1....0..1..2....1..0..2....0..1..2....1..0..2
..2..0..2....2..1..0....0..0..0....2..1..0....2..0..2....1..0..1....2..0..2
..2..1..2....2..0..2....1..0..0....2..1..0....1..2..0....2..0..2....0..2..1
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin, Apr 20 2014
STATUS
approved