OFFSET
1,1
COMMENTS
Column 3 of A256748
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..210
FORMULA
Empirical: a(n) = a(n-1) +4*a(n-2) +2*a(n-3) -5*a(n-4) -17*a(n-5) +20*a(n-6) -40*a(n-7) -28*a(n-8) +16*a(n-9) +176*a(n-10) +128*a(n-11) -256*a(n-12) for n>17
EXAMPLE
Some solutions for n=4
..1..0..0..1..1....1..0..0..1..0....1..0..1..1..0....0..0..1..0..1
..0..1..1..0..0....1..1..1..1..1....1..0..0..1..1....0..0..1..0..0
..1..0..0..1..1....1..0..0..1..0....0..1..1..1..0....1..1..1..1..1
..1..1..1..1..0....1..0..0..1..0....1..0..0..1..1....0..0..1..0..0
..1..0..0..1..1....0..1..1..0..1....1..1..1..1..0....1..0..1..0..1
..0..1..0..1..0....1..0..0..1..0....1..0..0..1..0....1..1..0..1..0
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin, Apr 09 2015
STATUS
approved