OFFSET
1,3
COMMENTS
Probability that Fib(n) contains no 6's goes to zero as n grows to infinity. I suppose the maximum number is F(258) having 54 digits with no 6's.
EXAMPLE
a(7)=13 since it is the 7th Fibonacci having no 6's
MATHEMATICA
Select[Fibonacci[Range[100]], DigitCount[#, 10, 6]==0&] (* Harvey P. Dale, Aug 26 2023 *)
CROSSREFS
KEYWORD
nonn,base
AUTHOR
Carmine Suriano, May 06 2010
STATUS
approved