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 A118842 #25 Feb 16 2025 08:33:01 %S A118842 2,3,5,7,47,2207 %N A118842 Primes of the form ceiling(phi^k). %H A118842 Eric Weisstein's World of Mathematics, <a href="https://mathworld.wolfram.com/Phi-Prime.html">Phi-Prime</a>. %F A118842 a(n) = A062724(A118841(n)). - _R. J. Mathar_, Sep 07 2007 %t A118842 Select[Table[Ceiling[GoldenRatio^n],{n,20}],PrimeQ] (* _James C. McMahon_, Sep 15 2024 *) %o A118842 (PARI) phi=(1+sqrt(5))/2;for(n=1,1e4,if(ispseudoprime(t=ceil(phi^n)),print1(t", "))) \\ _Charles R Greathouse IV_, Jul 29 2011 %Y A118842 Cf. A118841. %K A118842 nonn,hard %O A118842 1,1 %A A118842 _Eric W. Weisstein_, May 01 2006