OFFSET
1,1
COMMENTS
Column 4 of A204197
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..210
FORMULA
Empirical: a(n) = 2*a(n-1) +7*a(n-2) +a(n-3) -28*a(n-4) -30*a(n-5) +56*a(n-6) +71*a(n-7) -64*a(n-8) -74*a(n-9) +42*a(n-10) +39*a(n-11) -18*a(n-12) -9*a(n-13) +6*a(n-14) +a(n-15) -a(n-16) for n>19
EXAMPLE
Some solutions for n=5
..0..0..1..1....0..1..0..0....0..1..0..0....0..1..0..0....0..0..1..1
..0..1..0..0....0..1..0..0....1..0..1..1....1..1..0..1....0..1..0..0
..1..1..0..1....1..0..1..1....1..0..1..0....0..0..1..1....1..1..0..1
..1..0..1..1....0..0..1..0....0..1..0..0....1..1..0..0....1..0..1..0
..0..1..1..0....0..1..0..0....1..1..0..1....0..1..0..1....0..1..0..0
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin Jan 12 2012
STATUS
approved