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 A162861 #13 Sep 05 2018 09:04:13
%S A162861 11,12207031,2141993519227,10778947368421,17513875027111,
%T A162861 610851724137931,178250690949465223,614910264406779661,
%U A162861 22390512687494871811,2346320474383711003267,22793803793211153712637
%N A162861 Primes of the form n^10 + n^9 + n^8 + n^7 + n^6 + n^5 + n^4 + n^3 + n^2 + n + 1.
%C A162861 The corresponding n is given in A162862. This sequence lists primes of the form Phi(11,k), where Phi(11,k) = (k^11 - 1)/(k - 1) is the eleventh cyclotomic polynomial. - _Jianing Song_, Sep 05 2018
%H A162861 <a href="/index/Cy#CyclotomicPolynomialsValuesAtX">Index to values of cyclotomic polynomials of integer argument</a>
%t A162861 Select[Table[Total[n^Range[0,10]],{n,200}],PrimeQ] (* _Harvey P. Dale_, Feb 06 2015 *)
%o A162861 (PARI) print1(11);for(n=2,1000,k=(n^11-1)/(n-1);if(isprime(k),print1(","k)))
%Y A162861 Cf. A060885, A162862.
%K A162861 nonn
%O A162861 1,1
%A A162861 _Vladimir Joseph Stephan Orlovsky_, Jul 14 2009
%E A162861 Program by _Charles R Greathouse IV_, Oct 12 2009