OFFSET
1,1
COMMENTS
Column 1 of A253863
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..210
FORMULA
Empirical: a(n) = 8*a(n-1) -13*a(n-2) -8*a(n-3) +77*a(n-4) -392*a(n-5) +721*a(n-6) -504*a(n-7) +176*a(n-8) +384*a(n-9) -960*a(n-10) +512*a(n-11)
EXAMPLE
Some solutions for n=4
..0..1..1....0..1..0....0..1..0....1..1..1....0..1..1....0..1..0....0..1..0
..1..0..0....1..1..1....1..1..1....1..0..1....0..0..0....0..1..0....0..1..0
..1..0..0....1..0..0....0..0..0....0..0..0....0..1..1....1..0..1....1..1..1
..1..1..0....0..1..1....1..1..0....1..1..0....0..1..0....1..0..1....1..1..1
..0..0..1....1..0..1....1..0..0....1..1..0....0..1..1....0..1..1....0..0..1
..0..0..1....1..1..1....1..0..1....1..0..1....0..0..1....0..0..0....1..0..1
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin, Jan 17 2015
STATUS
approved