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 A063939 #13 Jun 25 2018 02:56:30
%S A063939 41,251,991,1471,2551,3301,4211,4721,4931,5167,5581,5791,7351,8317,
%T A063939 8581,9157,9781,11701,12517,13093,15541,16741,16927,17341,18301,18397,
%U A063939 19121,19231,20411,22571,23911,24151,25741,26293,26317,26681,27031
%N A063939 Numbers p from A001125 such that 2*p-3 is prime.
%H A063939 Harry J. Smith, <a href="/A063939/b063939.txt">Table of n, a(n) for n = 1..1000</a>
%o A063939 (PARI) j=[]; forprime(p=3,40000, if(znprimroot(p)==6, if(isprime(2*p- 3),j=concat(j,p)))); j
%o A063939 (PARI) { n=0; p=0; for (m=1, 10^9, p=nextprime(p+1); if (znprimroot(p)==6 && isprime(2*p - 3), write("b063939.txt", n++, " ", p); if (n==1000, break)) ) } \\ _Harry J. Smith_, Sep 03 2009
%Y A063939 Cf. A001125.
%K A063939 easy,nonn
%O A063939 1,1
%A A063939 _Jason Earls_, Aug 31 2001