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 A105757 #8 Feb 16 2025 08:32:57
%S A105757 2,31,61,5976577,1989179797398599794811479787771439644489521,
%T A105757 11241696329548911284929550459702062135838997526529,
%U A105757 73666302576706758839299120422550197113618385815703101
%N A105757 Prime Fibonacci 5-step numbers, A001591.
%H A105757 Tony D. Noe and Jonathan Vos Post, <a href="http://www.cs.uwaterloo.ca/journals/JIS/VOL8/Noe/noe5.html">Primes in Fibonacci n-step and Lucas n-step Sequences,</a> J. of Integer Sequences, Vol. 8 (2005), Article 05.4.4
%H A105757 Eric Weisstein's World of Mathematics, <a href="https://mathworld.wolfram.com/Fibonaccin-StepNumber.html">Fibonacci n-Step Number</a>
%t A105757 a={1, 0, 0, 0, 0}; lst={}; Do[s=Plus@@a; a=RotateLeft[a]; a[[ -1]]=s; If[PrimeQ[s], AppendTo[lst, s]], {n, 1000}]; lst
%Y A105757 Cf. A105756 (indices of prime Fibonacci 5-step numbers).
%K A105757 nonn
%O A105757 1,1
%A A105757 _T. D. Noe_, Apr 22 2005