OFFSET
0,3
COMMENTS
A117189 prefixed by an initial 1; essentially a duplicate. - N. J. A. Sloane and R. J. Mathar, Apr 07 2009
FORMULA
G.f.: f(z)=((1-3*z+2*z^2-z^3)/(1-4*z+4*z^2-2*z^3))
CROSSREFS
KEYWORD
easy,nonn
AUTHOR
Richard Choulet, Apr 03 2009
STATUS
approved