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 A153436 #14 Sep 26 2019 08:02:19
%S A153436 2,2,2,2,4,2,10,4,3,2,6,3,4,21,12,2,30,3,5,47,31,34,27,2,31,2,50,5,20,
%T A153436 23,89,29,179,11,2,16,41,96,75,22,55,10,209,46,38,17,34,7,61,121,119,
%U A153436 2,68,148,2,164,216,65,527,11,175,354,442,201,54,230,97,433,3
%N A153436 a(n) is the least k such that k^n*(k^n+1)-1 is prime.
%H A153436 Pierre CAMI, <a href="/A153436/b153436.txt">Table of n, a(n) for n = 1..500</a>
%o A153436 (PARI) a(n) = {my(k=1); while (! isprime(k^n*(k^n+1)-1), k++); k;}
%Y A153436 Cf. A101406, A153436, A153438.
%K A153436 nonn
%O A153436 1,1
%A A153436 _Pierre CAMI_, Dec 26 2008
%E A153436 Name corrected by _Michel Marcus_, Sep 24 2019