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 A172145 #7 Mar 08 2023 13:25:35
%S A172145 1,3,144,14930352,16641027750620563662096,
%T A172145 23041483585524168262220906489642018075101617466780496790573690289968,
%U A172145 61164766314391710035884829815943265224568052927769577329622759945237346639032672167677108820397521093126336764093707189513015791230614183821533954756601790054548991800671186110593262317807192235925106064
%N A172145 Smallest Fibonacci numbers with Factor 3^n.
%e A172145 f(1) = 3^0 = 1,
%e A172145 f(4) = 3^1 = 3,
%e A172145 f(12) = 2^4*3^2 = 144,
%e A172145 f(36) = 2^4*3^3*17*19*107 = 14930352,
%e A172145 f(108) = 2^4*3^4*17*19*53*107*109*5779*11128427,
%e A172145 f(324) = 2^4*3^5*17*19*53*107*109*2269*..,
%e A172145 f(972) = 2^4*3^6*17*19*53*107*109*2269*..., ..
%t A172145 lst={1};k=4;Do[AppendTo[lst,Fibonacci[k]];k*=3,{n,7}];lst
%Y A172145 Cf. A000045.
%K A172145 nonn
%O A172145 1,2
%A A172145 _Vladimir Joseph Stephan Orlovsky_, Nov 19 2010