1,1

if m=1, 2 or 3 (mod 4) F(m) is not divisible by 3.

Table of n, a(n) for n=1..98.

If k =1 or 2 (mod 3) a(3^m*k) = 3^(m+1) for m>=0

Table[3^IntegerExponent[Fibonacci[4n], 3], {n, 100}] (* Harvey P. Dale, Jun 03 2012 *)

Sequence in context: A144809 A225074 A127795 * A109932 A071909 A134662

Adjacent sequences: A074721 A074722 A074723 * A074725 A074726 A074727

nonn

Benoit Cloitre, Sep 04 2002

approved