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 A005125 #23 Feb 05 2024 00:55:27 %S A005125 1,2,4,5,7,8,13,14,19,20,22,23,25,29,34,35,37,40,44,47,49,50,53,58,64, %T A005125 68,70,77,82,83,85,88,89,92,95,97,100,103,104,107,110,118,125,127,128, %U A005125 133,134,137,139,140,148,152 %N A005125 Numbers k such that 8k - 3 is prime. %H A005125 Vincenzo Librandi, <a href="/A005125/b005125.txt">Table of n, a(n) for n = 1..1000</a> %t A005125 Select[Range[200], PrimeQ[8# - 3]&] (* _Vincenzo Librandi_, Jan 07 2013 *) %o A005125 (Magma) [n: n in [1..200] | IsPrime(8*n-3)]; // _Vincenzo Librandi_, Jan 07 2013 %o A005125 (PARI) is(n)=isprime(8*n-3) \\ _Charles R Greathouse IV_, May 22 2017 %K A005125 nonn,easy %O A005125 1,2 %A A005125 _N. J. A. Sloane_