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 A125971 #9 Mar 18 2020 07:30:02
%S A125971 6,9,11,21,29,33,36,49,64,66,68,80,110,113,144,240,266,270,309,348,
%T A125971 365,366,394,426,438,459,471,474,479,485,501,548,553,570,593,660,684,
%U A125971 699,704,725,729,743,783,798,801,809,815,820,824,833,841,891,900,931,968
%N A125971 Numbers k for which k^14+k^13-1 is prime.
%H A125971 Amiram Eldar, <a href="/A125971/b125971.txt">Table of n, a(n) for n = 1..10000</a>
%t A125971 Do[If[PrimeQ[x^14 + x^13 - 1], Print[x]], {x, 1, 600}]
%o A125971 (PARI) is(n)=isprime(n^14+n^13-1) \\ _Charles R Greathouse IV_, May 15 2013
%Y A125971 Cf. A000040, A045546, A125881-A125885, A125965-A125973.
%K A125971 nonn
%O A125971 1,1
%A A125971 _Artur Jasinski_, Dec 14 2006
%E A125971 More terms from _Amiram Eldar_, Mar 18 2020