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%I #6 Sep 20 2019 14:33:19
%S 987,377,86267571272,7778742049,10284720757613717413913,
%T 781774079430987230203437,1725375039079340637797070384,
%U 17978720198565577104981084195586024127087428957
%N Smallest Fibonacci number containing exactly n 7's.
%e a(2)=377 so 377 is the smallest Fibonacci number containing exactly two 7's.
%t With[{f={#,DigitCount[#,10,7]}&/@Fibonacci[Range[400]]},Table[ SelectFirst[ f,#[[2]] == n&],{n,10}]][[All,1]] (* Requires Mathematica version 10 or later *) (* _Harvey P. Dale_, Sep 20 2019 *)
%K base,nonn
%O 1,1
%A _Shyam Sunder Gupta_, Jul 14 2002
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