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 A033868 #24 Jan 26 2023 12:12:05 %S A033868 2,4,6,10,12,16,24,30,34,36,40,42,46,52,54,60,70,76,82,84,90,94,96, %T A033868 112,114,120,124,136,142,144,150,160,162,166,172,180,184,186,190,196, %U A033868 210,214,222,226,232,234,240,244,252,262,270,274,280,300,306,322,336,342 %N A033868 Numbers n such that 7*n-11 is prime. %D A033868 M. Cerasoli, F. Eugeni and M. Protasi, Elementi di Matematica Discreta, Bologna 1988. %D A033868 Emanuele Munarini and Norma Zagaglia Salvi, Matematica Discreta,UTET, CittaStudiEdizioni, Milano 1997. %H A033868 Vincenzo Librandi, <a href="/A033868/b033868.txt">Table of n, a(n) for n = 1..1000</a> %F A033868 a(n) = A024903(n)+1 = A089033(n)+2 = A090614(n)*2+2. %t A033868 Select[Range[500],PrimeQ[7#-11]&] (* _Harvey P. Dale_, Mar 31 2011 *) %o A033868 (Magma) [n: n in [0..350] | IsPrime(7*n - 11)]; // _Vincenzo Librandi_, Sep 26 2012 %o A033868 (PARI) is(n)=isprime(7*n-11) \\ _Charles R Greathouse IV_, Feb 17 2017 %Y A033868 Cf. A045437 (associated primes), A090613 (gives prime index). %Y A033868 Cf. A024903, A089033, A090614. %K A033868 nonn,easy %O A033868 1,1 %A A033868 _Giovanni Teofilatto_, Dec 01 2003 %E A033868 Extended by _Ray Chandler_, Dec 23 2003 %E A033868 Offset corrected by _Arkadiusz Wesolowski_, Aug 09 2011