OFFSET
1,1
COMMENTS
Column 3 of A267644.
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..210
FORMULA
Empirical: a(n) = 2*a(n-1) +16*a(n-2) -33*a(n-3) -91*a(n-4) +198*a(n-5) +216*a(n-6) -523*a(n-7) -180*a(n-8) +576*a(n-9) -180*a(n-11)
EXAMPLE
Some solutions for n=6
..0..0..1....0..1..1....0..1..1....0..0..1....0..1..1....0..1..0....0..0..1
..0..0..1....1..0..0....0..1..1....0..1..1....1..0..1....0..0..1....0..1..1
..1..1..0....1..1..0....1..0..0....1..1..0....1..1..0....1..1..0....1..1..0
..1..0..1....0..1..1....0..0..1....1..0..1....0..0..1....0..1..1....1..0..0
..0..1..0....1..0..0....1..1..0....0..1..0....0..1..0....1..0..0....0..0..1
..1..0..0....0..1..1....1..0..1....1..0..0....1..0..1....0..1..1....1..1..0
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin, Jan 18 2016
STATUS
approved