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 A105765 #8 Feb 16 2025 08:32:57
%S A105765 3,7,31,113,223,439,863,6553,641449337,18837477823,
%T A105765 40276345611255837298559,58893004546665606516457357571,
%U A105765 9774215601155945008361439560567878777
%N A105765 Prime Lucas 5-step numbers, A074048.
%H A105765 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 A105765 Eric Weisstein's World of Mathematics, <a href="https://mathworld.wolfram.com/Lucasn-StepNumber.html">Lucas n-Step Number</a>
%t A105765 a={-1, -1, -1, -1, 5}; lst={}; Do[s=Plus@@a; a=RotateLeft[a]; a[[ -1]]=s; If[PrimeQ[s], AppendTo[lst, s]], {n, 1000}]; lst
%Y A105765 Cf. A105764 (indices of prime Lucas 5-step numbers).
%K A105765 nonn
%O A105765 1,1
%A A105765 _T. D. Noe_, Apr 22 2005