This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.
%I A177245 #14 Sep 08 2022 08:45:53
%S A177245 0,1,2,5,8,21,55,89,144,610,987,1597,2584,4181,6765,10946,17711,28657,
%T A177245 75025,196418,514229,5702887,9227465,24157817,165580141,267914296,
%U A177245 4807526976,7778742049,12586269025,86267571272,591286729879,956722026041,1548008755920
%N A177245 Fibonacci numbers whose decimal expansion does not contain any digit 3.
%C A177245 Probability that Fib(n) contains no 3's decreases to zero as n goes to infinity. I suppose that the maximum number is Fib(223) having 47 digits, none of them being a "3".
%e A177245 a(6)=21 since 21 is the 6th Fibonacci having no 3's.
%t A177245 Join[{0}, Select[Fibonacci[Range[2, 60]], DigitCount[#, 10, 3]==0&]] (* _Vincenzo Librandi_, May 09 2019 *)
%o A177245 (Magma) [0] cat [Fibonacci(n): n in [2..150] | not 3 in Intseq(Fibonacci(n))]; // _Vincenzo Librandi_, May 09 2019
%Y A177245 Cf. A000045, A177194, A177195, A177231, A176253
%K A177245 nonn,base
%O A177245 1,3
%A A177245 _Carmine Suriano_, May 06 2010
%E A177245 a(1) changed from 1 to 0 by _Vincenzo Librandi_, May 09 2019