OFFSET
1,1
COMMENTS
Column 4 of A207879
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..210
FORMULA
Empirical: a(n) = 2*a(n-2) +7*a(n-3) +4*a(n-4) -3*a(n-5) -17*a(n-6) -5*a(n-7) +7*a(n-8) +2*a(n-9) -13*a(n-10) -a(n-11) -2*a(n-12) for n>14
EXAMPLE
Some solutions for n=4
..0..1..1..1....0..1..0..0....1..1..0..0....1..0..0..1....0..1..1..0
..1..0..0..1....1..1..0..0....0..0..1..0....0..1..1..1....1..0..0..1
..1..1..1..0....1..0..0..1....0..1..1..0....0..1..1..0....1..1..1..1
..0..1..1..0....0..0..1..1....1..1..0..0....1..0..0..1....0..1..1..0
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin Feb 21 2012
STATUS
approved