OFFSET
1,1
COMMENTS
Column 4 of A203378.
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..210
FORMULA
Empirical: a(n) = 16*a(n-1) -65*a(n-2) +92*a(n-3) -48*a(n-4) +8*a(n-5).
Empirical g.f.: 4*x*(81 - 443*x + 692*x^2 - 376*x^3 + 64*x^4) / (1 - 16*x + 65*x^2 - 92*x^3 + 48*x^4 - 8*x^5). - Colin Barker, Jun 04 2018
EXAMPLE
Some solutions for n=4:
..0..1..0..1..1....1..1..1..1..1....0..0..1..0..1....0..1..1..0..1
..1..1..1..0..1....1..1..1..1..1....0..0..0..1..0....1..0..1..1..0
..1..1..1..1..0....1..0..1..0..1....1..0..0..0..0....1..1..1..1..1
..1..0..1..0..1....1..1..1..1..1....0..0..1..0..0....0..1..1..0..1
..0..0..0..1..1....0..1..0..1..0....1..0..0..1..0....0..0..1..1..1
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin, Dec 31 2011
STATUS
approved