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 A221717 #5 Jan 30 2013 20:48:14
%S A221717 2,3,5,11,13,17,23,29,31,41,43,47,53,59,67,71,73,79,83,89,97,101,103,
%T A221717 107,109,113,131,137,139,149,151,157,163,167,173,179,181,191,193,197,
%U A221717 199,211,223,227,229,233,239,241,251,257,263,269,277,281,283,293
%N A221717 Non-cuban primes.
%C A221717 Primes not in A002407.
%H A221717 T. D. Noe, <a href="/A221717/b221717.txt">Table of n, a(n) for n = 1..1000</a>
%t A221717 nn = 10; c = Select[Table[3 x^2 + 3 x + 1, {x, nn}], PrimeQ[#] &]; Complement[Prime[Range[PrimePi[c[[-1]]]]], c] (* _T. D. Noe_, Jan 30 2013 *)
%Y A221717 Cf. A002407, A007645, A003627.
%K A221717 nonn
%O A221717 1,1
%A A221717 _N. J. A. Sloane_, Jan 29 2013