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 A024900 #22 Sep 08 2022 08:44:48 %S A024900 1,5,11,13,19,23,25,31,35,41,43,49,59,61,65,71,83,85,91,103,109,113, %T A024900 115,119,121,125,133,145,149,151,155,173,175,179,185,199,203,211,215, %U A024900 221,223,229,233,241,245,253,263,265,269,275,281,283,289,299,301,305,319,323,325,329 %N A024900 Numbers k such that 7*k + 6 is prime. %H A024900 Vincenzo Librandi, <a href="/A024900/b024900.txt">Table of n, a(n) for n = 1..1000</a> %t A024900 Select[Range[400], PrimeQ[7# + 6] &] (* _Vincenzo Librandi_, Sep 25 2012 *) %o A024900 (Magma) [n: n in [1..400] | IsPrime(7*n+6)]; // _Vincenzo Librandi_, Nov 20 2010 %o A024900 (PARI) is(n)=isprime(7*n+6) \\ _Charles R Greathouse IV_, Sep 25 2012 %Y A024900 Cf. A045473 (associated primes). %K A024900 nonn,easy %O A024900 1,2 %A A024900 _Clark Kimberling_