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 A134197 #17 Mar 19 2020 04:21:38
%S A134197 3,7,13,23,31,47,61,73,89,103,113,131,139,151,167,181,193,199,233,241,
%T A134197 271,293,317,337,359,389,409,421,433,449,467,491,509,523,547,577,601,
%U A134197 619,647,661,691,709,743,761,773,797,811,823,839,863,887,919,941,953
%N A134197 Primes that occur in A126990 twice.
%C A134197 It seems, as tested up to prime(100000), that triplicates of primes do not occur in A126990, so this sequence stays the same if defined as either "... in A126990 exactly twice" or "... in A126990 at least twice." - _Michel Marcus_ and _R. J. Mathar_, Nov 07 2013
%H A134197 Amiram Eldar, <a href="/A134197/b134197.txt">Table of n, a(n) for n = 1..10000</a>
%o A134197 (PARI) lista(nn) = {last = A126990(1); for (n=2, nn, new = A126990(n); if (new == last, print1(new, ", ")); last = new;);} \\ _Michel Marcus_, Nov 07 2013
%Y A134197 Cf. A126990, A134196.
%K A134197 nonn
%O A134197 1,1
%A A134197 _Artur Jasinski_, Oct 13 2007
%E A134197 More terms from _Michel Marcus_, Nov 07 2013