OFFSET
0,1
LINKS
Tanya Khovanova, Recursive Sequences.
Index entries for linear recurrences with constant coefficients, signature (2,-1).
FORMULA
G.f.: (4-5*x) / (x-1)^2. - R. J. Mathar, Aug 06 2015
MATHEMATICA
4-Range[0, 60] (* Harvey P. Dale, Sep 21 2011 *)
CROSSREFS
KEYWORD
sign,easy
AUTHOR
STATUS
approved