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 A163426 #10 Dec 23 2016 05:53:21
%S A163426 29,67,349,1009,3389,4111,9281,19709,46691,132701,140659,166429,
%T A163426 658589,884831,1000099,1405039,1520989,1601729,1728119,2146817,
%U A163426 2460509,2685757,4574461,7078079,7880797,10077911,14887181,23149409,23393941,27000299
%N A163426 Primes of the form ((p+1)/2)^3 + ((p-1)/2), p is prime.
%H A163426 G. C. Greubel, <a href="/A163426/b163426.txt">Table of n, a(n) for n = 1..1500</a>
%e A163426 ((5+1)/2)^3 + ((5-1)/2) = 27 + 2 = 29;
%e A163426 ((7+1)/2)^3 + ((7-1)/2) = 64 + 3 = 67.
%t A163426 f[n_]:=((p+1)/2)^3+((p-1)/2); lst={};Do[p=Prime[n];If[PrimeQ[f[p]],AppendTo[lst,f[p]]],{n,6!}];lst
%Y A163426 Cf. A162652, A163418, A163419, A163420, A163421, A163422, A163424, A163425.
%K A163426 nonn,easy
%O A163426 1,1
%A A163426 _Vladimir Joseph Stephan Orlovsky_, Jul 27 2009
%E A163426 Checked by _Charles R Greathouse IV_, Aug 11 2009