OFFSET
1,1
COMMENTS
Column 3 of A209897
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..210
FORMULA
Empirical: a(n) = 14*a(n-1) +31*a(n-2) -366*a(n-3) -210*a(n-4) +2564*a(n-5) +40*a(n-6) -4096*a(n-7) -96*a(n-8) +1152*a(n-9)
EXAMPLE
Some solutions for n=4
..0..0..0..0....0..0..1..0....0..0..1..2....0..1..1..1....0..0..0..0
..0..1..0..1....0..1..1..1....0..1..1..1....1..0..0..0....0..1..0..1
..0..0..0..0....0..0..1..2....0..0..0..1....1..0..1..0....0..0..1..1
..0..1..1..1....2..0..1..1....2..0..1..0....0..0..0..0....1..0..0..0
..1..0..1..2....2..0..0..1....2..0..1..0....1..0..2..2....0..1..1..0
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin Mar 14 2012
STATUS
approved