OFFSET
1,3
COMMENTS
Probability that Fib(n) contains no digit 7 goes to zero as n grows to infinity. I suppose that the maximum number is Fib(224) having 47 digits.
EXAMPLE
a(14)=610 since it is the 14th Fibonacci containing no 7's.
MATHEMATICA
Select[Fibonacci[Range[100]], DigitCount[#, 10, 7]==0&] (* Harvey P. Dale, Dec 13 2014 *)
CROSSREFS
KEYWORD
nonn,base
AUTHOR
Carmine Suriano, May 07 2010
STATUS
approved