OFFSET
1,2
LINKS
Amiram Eldar, Table of n, a(n) for n = 1..10000
FORMULA
a(n) seems to be asymptotic to c*n with c=1.7...
MATHEMATICA
Select[Range[120], CoprimeQ[2^#-1, Fibonacci[#]]&] (* Harvey P. Dale, Nov 27 2015 *)
CROSSREFS
KEYWORD
nonn
AUTHOR
Benoit Cloitre, Sep 07 2002
STATUS
approved