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 A105712 #5 Feb 16 2025 08:32:57 %S A105712 2,21,233,2584,28657,9227465,2178309,24157817,267914296,2971215073, %T A105712 20365011074,225851433717,2504730781961,27777890035288, %U A105712 19740274219868223167,2111485077978050,23416728348467685 %N A105712 Smallest m such that 2 is at the n-th position of the decimal representation of the m-th Fibonacci number. %C A105712 a(n) = A000045(A105702(n)). %H A105712 Eric Weisstein's World of Mathematics, <a href="https://mathworld.wolfram.com/FibonacciNumber.html">Fibonacci Number</a> %e A105712 n=3: A105700(3)=18, a(3)=A000045(18)=2584->[2]584; %e A105712 n=4: A105700(4)=23, a(4)=A000045(23)=28657->[2]8657. %Y A105712 Cf. A105711, A072351, A105713, A105714, A105715, A105716, A105717, A105718, A105719. %K A105712 nonn,base %O A105712 0,1 %A A105712 _Reinhard Zumkeller_, Apr 18 2005