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 A157323 #4 Jun 02 2025 01:24:42
%S A157323 3,13,109912203092239643840221,
%T A157323 568972471024107865287021434301977158534824481
%N A157323 Primes in A023037.
%t A157323 lst={};Do[s=0;Do[s+=n^a,{a,0,n-1}];If[PrimeQ[s],AppendTo[lst,s]],{n,0,2*5!}];lst
%K A157323 nonn
%O A157323 1,1
%A A157323 _Vladimir Joseph Stephan Orlovsky_, Feb 27 2009