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 A104082 #23 Sep 08 2022 08:45:17 %S A104082 2,5,17,67,257,1031,4099,16411,65537,262147,1048583,4194319,16777259, %T A104082 67108879,268435459,1073741827,4294967311,17179869209,68719476767, %U A104082 274877906951,1099511627791,4398046511119,17592186044423,70368744177679,281474976710677,1125899906842679 %N A104082 Smallest prime >= 4^n. %H A104082 Vincenzo Librandi, <a href="/A104082/b104082.txt">Table of n, a(n) for n = 0..500</a> %F A104082 a(n) = A104080(2n). - _Jinyuan Wang_, Nov 09 2018 %t A104082 NextPrime[4^Range[0, 23]] (* _Vladimir Joseph Stephan Orlovsky_, Mar 13 2011 *) %o A104082 (PARI) g(n,b=4) = for(x=0,n,print1(nextprime(b^x)",")) %o A104082 (Magma) [NextPrime(4^n-1): n in [0..50]]; // _Jinyuan Wang_, Nov 09 2018 %Y A104082 Cf. A104080 (for 2^n), A104081 (for 3^n). %Y A104082 Cf. A014210. %K A104082 easy,nonn %O A104082 0,1 %A A104082 _Cino Hilliard_, Mar 03 2005