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 A128354 #16 Jun 11 2021 05:01:33
%S A128354 5,17,31,59,373,643,2843,5209,85009
%N A128354 Numbers k such that (19^k - 5^k)/14 is prime.
%C A128354 All terms are primes.
%C A128354 a(10) > 10^5. - _Robert Price_, Jul 22 2013
%t A128354 k=19; Do[p=Prime[n]; f=(k^p-5^p)/(k-5); If[ PrimeQ[f], Print[p] ], {n,1,100}]
%o A128354 (PARI) is(n)=isprime((19^n-5^n)/14) \\ _Charles R Greathouse IV_, Feb 17 2017
%Y A128354 Cf. A062572, A128344, A128345, A128346, A128347, A128348, A128349, A128350, A128351, A128352, A128353.
%Y A128354 Cf. A004061, A082182, A121877, A059802.
%Y A128354 Cf. A057171, A082387, A122853, A128335, A128336, A128337, A128338, A128339, A128340, A128341, A128342.
%K A128354 hard,more,nonn
%O A128354 1,1
%A A128354 _Alexander Adamchuk_, Feb 27 2007
%E A128354 a(7)-a(9) from _Robert Price_, Jul 22 2013