OFFSET
1,2
COMMENTS
Column 2 of A300427.
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..210
Simon Plouffe, Conjectures of the OEIS, as of June 20, 2018.
FORMULA
Empirical: a(n) = 3*a(n-1) + a(n-2) - 3*a(n-4) - 2*a(n-5) - a(n-6) for n > 7.
Empirical g.f.: -x*(-x^6+x^4+3*x^3-1)/(x^6+2*x^5+3*x^4-x^2-3*x+1). - Simon Plouffe, Jun 20 2018
EXAMPLE
Some solutions for n=5:
0 1 0 1 0 0 0 0 0 1 0 0 0 0 0 0 0 1 0 0
0 1 0 1 0 1 1 1 0 1 0 1 1 0 1 1 0 1 0 0
0 0 1 0 0 1 1 1 0 0 1 0 1 1 0 0 1 0 1 1
1 1 0 1 1 0 0 1 0 1 0 1 0 0 0 0 1 0 0 1
0 0 1 1 0 0 0 0 0 1 1 1 1 1 1 1 1 1 0 0
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin, Mar 05 2018
STATUS
approved