OFFSET
1,1
COMMENTS
Column 2 of A235772
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..210
FORMULA
Empirical: a(n) = 4*a(n-1) +6*a(n-2) -42*a(n-3) +5*a(n-4) +178*a(n-5) -130*a(n-6) -380*a(n-7) +440*a(n-8) +400*a(n-9) -688*a(n-10) -128*a(n-11) +528*a(n-12) -96*a(n-13) -160*a(n-14) +64*a(n-15)
EXAMPLE
Some solutions for n=4
..0..0..0....0..0..0....0..1..0....0..1..0....1..0..1....0..1..1....0..0..0
..0..1..0....0..1..0....0..1..0....1..0..0....0..0..0....0..1..1....1..0..1
..0..0..0....1..0..0....0..1..0....1..0..0....1..1..0....1..0..0....0..0..0
..0..1..0....1..1..0....1..0..1....1..0..0....1..1..0....1..1..1....0..0..1
..0..1..0....1..0..0....1..0..1....1..1..0....1..0..1....1..0..1....0..0..1
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin, Jan 15 2014
STATUS
approved