%I #4 Jan 22 2015 08:30:43
%S 610,6765,365435296162,160500643816367088,6356306993006846248183,
%T 757791618667731139247631372100066,16641027750620563662096,
%U 40934782466626840596168752972961528246147
%N Smallest Fibonacci number containing exactly n 6's.
%e a(2)=6765 so 6765 is the smallest Fibonacci number containing exactly two 6's.
%t With[{fibs=Fibonacci[Range[1000]]},Table[SelectFirst[fibs, DigitCount[ #,10,6] == n&],{n,8}]] (* The program uses the SelectFirst function from Mathematica version 10 *) (* _Harvey P. Dale_, Jan 22 2015 *)
%K base,nonn
%O 1,1
%A _Shyam Sunder Gupta_, Jul 14 2002