OFFSET
1,1
COMMENTS
Column 6 of A208780.
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..210
FORMULA
Empirical: a(n) = a(n-1) + a(n-2) for n>4.
Empirical g.f.: 26*x*(1 + 25*x - 21*x^2 - 22*x^3) / (1 - x - x^2). - Colin Barker, Jul 06 2018
EXAMPLE
Some solutions for n=4:
0 1 0 1 0 0 0 1 0 1 1 0 0 1 0 1 0 1 1 0 1 0 1 1
1 0 1 0 1 0 1 0 1 0 1 1 1 0 1 0 1 0 0 1 0 1 0 0
0 1 0 1 0 1 0 1 0 1 0 0 0 1 0 1 0 0 1 0 1 0 1 1
1 0 1 0 1 0 1 0 1 0 1 1 1 0 1 0 1 1 0 1 0 1 0 0
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin, Mar 01 2012
STATUS
approved