OFFSET
0,2
COMMENTS
Lucas(3n+1) union Lucas(3n+2).
LINKS
FORMULA
a(n) = 4*a(n-2)+a(n-4). - R. J. Mathar, Feb 10 2011
G.f.: (-x^3 + 3*x^2 + 3*x + 1)/(-x^4 - 4*x^2 + 1). - Ralf Stephan, Aug 31 2013
MATHEMATICA
Select[LucasL[Range[50]], OddQ] (* Harvey P. Dale, Sep 26 2012 *)
CROSSREFS
KEYWORD
nonn,easy
AUTHOR
EXTENSIONS
More terms from Erich Friedman.
STATUS
approved