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 A229612 #7 Jun 13 2017 10:32:27
%S A229612 11,37,107,181,449,457,3583,9133,10139,99689
%N A229612 Numbers n such that (19^n + 5^n)/24 is prime.
%C A229612 All terms are primes.
%C A229612 a(11) > 10^5.
%t A229612 k=19; Do[p=Prime[n]; f=(k^p+5^p)/(k+5); If[ PrimeQ[f], Print[p] ], {n, 1, 9592}]
%o A229612 (PARI) is(n)=ispseudoprime((19^n+5^n)/24) \\ _Charles R Greathouse IV_, Jun 13 2017
%Y A229612 Cf. A128075, A228130, A225818.
%K A229612 hard,more,nonn
%O A229612 1,1
%A A229612 _Robert Price_, Sep 26 2013