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 A071198 #9 Jul 19 2017 08:29:40
%S A071198 2,5,7,19,43,53,59,67,83,101,103,109,163,179,181,191,193,199,229,233,
%T A071198 241,257,263,271,277,313,337,347,367,373,431,433,449,467,491,499,521,
%U A071198 541,547,571,587,607,613,619,643,659,683,701
%N A071198 Impossible primes in A071195. These primes are not terminal primes of shortest consecutive prime sequences initiated with n-th prime and providing prime-sum.
%H A071198 Michael De Vlieger, <a href="/A071198/b071198.txt">Table of n, a(n) for n = 1..10000</a>
%t A071198 Complement[Prime@ Range@ PrimePi@ Last@ #, #] &@ Prime@ Table[k = 1; While[! PrimeQ@ Total@ Prime@ Range[n, n + k], k++]; n + k, {n, 125}] (* _Michael De Vlieger_, Jul 18 2017 *)
%Y A071198 Cf. A071194, A071195, A071196, A071197.
%K A071198 nonn
%O A071198 1,1
%A A071198 _Labos Elemer_, May 16 2002