OFFSET
1,1
COMMENTS
Column 4 of A205072
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..210
FORMULA
Empirical: a(n) = 3*a(n-2) -2*a(n-6) -3*a(n-8) -2*a(n-10) -3*a(n-12) +2*a(n-14) +5*a(n-16) +6*a(n-18) +6*a(n-20) +3*a(n-22) +a(n-24) for n>27
EXAMPLE
Some solutions for n=4
..0..0..1..1..1....0..1..0..1..1....0..0..1..0..0....1..0..1..1..0
..0..0..0..0..1....0..0..0..0..0....1..0..1..1..1....1..1..0..1..0
..1..0..1..0..1....0..1..0..1..0....1..0..0..0..1....1..1..1..1..1
..1..0..0..0..0....0..0..0..0..0....1..1..1..0..1....0..1..0..1..1
..1..1..1..0..1....0..1..0..1..0....0..0..1..0..0....0..1..1..0..1
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin Jan 21 2012
STATUS
approved