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 A138944 #11 Jul 27 2025 00:22:18
%S A138944 349,2447992580749,59088590134729116001
%N A138944 Primes of the form (17^k - 3^k)/14.
%C A138944 The next term has 604 digits. - _Harvey P. Dale_, Dec 03 2021
%H A138944 Amiram Eldar, <a href="/A138944/b138944.txt">Table of n, a(n) for n = 1..4</a>
%t A138944 a={};Do[p=(17^n-3^n)/14;If[PrimeQ[p],AppendTo[a,p]],{n,1,10^2}];a
%t A138944 Select[Table[(17^n-3^n)/14,{n,30}],PrimeQ] (* _Harvey P. Dale_, Dec 03 2021 *)
%Y A138944 Cf. A128031 (corresponding values of k).
%K A138944 nonn,hard
%O A138944 1,1
%A A138944 _Vladimir Joseph Stephan Orlovsky_, May 16 2008