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 A024893 #22 Sep 08 2022 08:44:48 %S A024893 0,1,3,5,7,9,13,15,17,19,23,27,29,33,35,37,43,45,49,55,57,59,63,65,75, %T A024893 77,79,83,85,87,89,93,97,103,105,115,117,119,127,129,133,139,143,147, %U A024893 149,153,155,159,163,167,169,173,185,187,189,195,197,199,205,213,215,217,219,225,227 %N A024893 Numbers k such that 3*k+2 is prime. %H A024893 Vincenzo Librandi, <a href="/A024893/b024893.txt">Table of n, a(n) for n = 1..1000</a> %F A024893 a(n) = A087370(n)-1 = A088879(n)+1. %t A024893 Select[Range[0, 250], PrimeQ[3# + 2] &] (* _Vincenzo Librandi_, Sep 25 2012 *) %o A024893 (Magma) [n: n in [0..1000] | IsPrime(3*n+2)]; // _Vincenzo Librandi_, Nov 20 2010 %o A024893 (PARI) is(n)=isprime(3*n+2) \\ _Charles R Greathouse IV_, Feb 17 2017 %Y A024893 Cf. A003627 (associated primes), A091177 (gives prime index). %Y A024893 Cf. A087370, A088879. %K A024893 nonn,easy %O A024893 1,3 %A A024893 _Clark Kimberling_