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 A105705 #5 Feb 16 2025 08:32:57 %S A105705 5,10,17,25,37,29,34,52,50,56,53,58,82,98,77,77,85,92,98,96,101,125, %T A105705 120,127,120,125,134,144,139,144,175,159,165,163,168,180,185,216,187, %U A105705 192,201,210,206,211,251,250,237,230,235,246,255,275,254,261,268,305,273 %N A105705 Smallest m such that 5 is at the n-th position of the decimal representation of the m-th Fibonacci number. %C A105705 A105715(n) = A000045(a(n)). %H A105705 Eric Weisstein's World of Mathematics, <a href="https://mathworld.wolfram.com/FibonacciNumber.html">Fibonacci Number</a> %e A105705 n=3: a(3)=25, A000045(25)=A105710(3)=75025->7[5]025; %e A105705 n=4: a(4)=37, A000045(37)=A105710(4)=24157817->241[5]7817. %Y A105705 Cf. A105701, A072354, A105702, A105703, A105704, A105706, A105707, A105708, A105709. %K A105705 nonn,base %O A105705 0,1 %A A105705 _Reinhard Zumkeller_, Apr 18 2005