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A105715 Smallest m such that 5 is at the n-th position of the decimal representation of the m-th Fibonacci number. 10

%I #4 Oct 07 2016 09:57:21

%S 5,55,1597,75025,24157817,514229,5702887,32951280099,12586269025,

%T 225851433717,53316291173,591286729879,61305790721611591,

%U 135301852344706746049,5527939700884757,5527939700884757

%N Smallest m such that 5 is at the n-th position of the decimal representation of the m-th Fibonacci number.

%C a(n) = A000045(A105705(n)).

%H Eric Weisstein's World of Mathematics, <a href="http://mathworld.wolfram.com/FibonacciNumber.html">Fibonacci Number</a>

%e n=3: A105700(3)=25, a(3)=A000045(25)=75025->7[5]025;

%e n=4: A105700(4)=37, a(4)=A000045(37)=24157817->241[5]7817.

%Y Cf. A105711, A072351, A105712, A105713, A105714, A105716, A105717, A105718, A105719.

%K nonn,base

%O 0,1

%A _Reinhard Zumkeller_, Apr 18 2005

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Last modified April 18 18:58 EDT 2024. Contains 371781 sequences. (Running on oeis4.)