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 A139447 #7 Mar 29 2017 19:46:26
%S A139447 2,3,8,11,94,127,201,211,257,259,392,1305,5234,13013,13679,16866,23879
%N A139447 Numbers n such that primorial(n)/2 + 64 is prime.
%C A139447 a(18) > 25000. - _Robert Price_, Mar 29 2017
%t A139447 k = 1/2; a = {}; Do[k = k*Prime[n]; If[PrimeQ[k + 64], Print[n]; AppendTo[a, n]], {n, 325}]; a
%Y A139447 Cf. A067026, A067027, A139439-A139457, A103514.
%K A139447 nonn
%O A139447 1,1
%A A139447 _Artur Jasinski_, Apr 21 2008
%E A139447 a(12) from _Ray Chandler_, Jun 16 2013
%E A139447 a(13)-a(17) from _Robert Price_, Mar 29 2017