OFFSET
1,1
COMMENTS
Column 3 of A228986.
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..210
FORMULA
Empirical: a(n) = 12*a(n-1) -34*a(n-2) -16*a(n-3) +152*a(n-4) -116*a(n-5) -88*a(n-6) +136*a(n-7) -172*a(n-8) +168*a(n-9) -40*a(n-10) +32*a(n-11).
EXAMPLE
Some solutions for n=4
..0..0..0....0..1..1....0..0..1....0..1..0....1..0..0....1..1..1....0..1..0
..1..1..1....0..1..0....0..1..1....0..0..0....1..0..1....1..1..1....0..0..1
..0..1..0....0..0..1....1..1..1....0..0..0....1..0..0....0..0..1....1..0..1
..0..1..0....1..0..0....1..1..0....1..0..1....1..1..1....0..1..1....1..1..0
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin, Sep 10 2013
STATUS
approved