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%I A173179 #17 Sep 08 2022 08:45:50
%S A173179 3,8,9,11,14,17,18,20,24,27,38,41,45,48,50,51,56,59,60,62,63,71,77,78,
%T A173179 81,84,86,87,90,92,93,95,101,111,113,114,119,146,147,153,155,171,179,
%U A173179 186,204,207,219,225,230,231,233,234,240,246,254,255,267,284,287,291
%N A173179 Numbers n such that n^4-n^3-n^2-n-1 is prime.
%C A173179 All terms == 0 or 2 (mod 3). - _Robert Israel_, Mar 09 2020
%H A173179 Robert Israel, <a href="/A173179/b173179.txt">Table of n, a(n) for n = 1..10000</a>
%p A173179 select(t -> isprime(t^4-t^3-t^2-t-1), [$2..1000]); # _Robert Israel_, Mar 09 2020
%t A173179 f[n_]:=n^4-n^3-n^2-n-1;Select[Range[6! ],PrimeQ[f[ #1]]&]
%o A173179 (PARI) is(n)=isprime(n^4-n^3-n^2-n-1) \\ _Charles R Greathouse IV_, Jun 06 2017
%o A173179 (Magma) [n: n in [2..350] | IsPrime(n^4 - n^3 - n^2 - n - 1)]; // _Vincenzo Librandi_, Mar 16 2020
%Y A173179 Cf. A125082, A002328, A162294.
%K A173179 nonn,easy
%O A173179 1,1
%A A173179 _Vladimir Joseph Stephan Orlovsky_, Feb 11 2010
%E A173179 Edited by _N. J. A. Sloane_, Apr 10 2010

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