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 A172150 #7 Mar 30 2012 18:52:13
%S A172150 8,144,4807526976,5972304273877744135569338397692020533504
%N A172150 Smallest Fibonacci number divisible by 2^(2*n).
%C A172150 The next term has 161 digits.
%e A172150 f(12)=144=2^4*3^2,
%e A172150 f(48)=4807526976=2^6*3^2*7*23*47*1103,
%e A172150 f(192)=2^8*3^2*7*23*47*769*1087*1103*2207*..,
%e A172150 f(768)=2^10*3^2*7*23*47*127*383*..,..
%t A172150 lst={8};k=12;Do[AppendTo[lst,Fibonacci[k]];k*=4,{n,5}];lst
%Y A172150 Cf. A000045, A172145
%K A172150 nonn
%O A172150 1,1
%A A172150 _Vladimir Joseph Stephan Orlovsky_, Nov 19 2010