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 A104535 #11 Feb 16 2025 08:32:56
%S A104535 2,29,401,773,5350220959,2682493808945359
%N A104535 Prime tetranacci numbers.
%C A104535 The next term is too large to include.
%C A104535 The next term has 114 digits. - _Harvey P. Dale_, Jun 10 2018
%H A104535 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 A104535 Eric Weisstein's World of Mathematics, <a href="https://mathworld.wolfram.com/TetranacciNumber.html">Tetranacci Number</a>
%t A104535 Select[LinearRecurrence[{1,1,1,1},{0,1,1,2},57],PrimeQ] (* _Harvey P. Dale_, Jun 10 2018 *)
%Y A104535 Cf. A104534.
%K A104535 nonn
%O A104535 1,1
%A A104535 _Eric W. Weisstein_, Mar 13 2005