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 A031117 #6 Jan 13 2024 13:21:31 %S A031117 4,24,41,43,44,58,67,88,92,99,101,112,122,131,148,149,152,158,164,175, %T A031117 180,184,188,189,207,211,213,217,236,252,277,282,287,289,304,307,313, %U A031117 314,318,321,328,338,340,350,360,374,397,404 %N A031117 Position of n-th 5 in A031111. %t A031117 Flatten[Position[Flatten[IntegerDigits[#,9]&/@Fibonacci[Range[100]]],5]]-1 (* _Harvey P. Dale_, Jan 13 2024 *) %K A031117 nonn %O A031117 1,1 %A A031117 _Clark Kimberling_