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A272571 Primes of the form n^4 + n + 1 with n positive. 2

%I #29 Sep 08 2022 08:46:16

%S 3,19,631,1303,6571,14653,20749,38431,331801,457003,1048609,1679653,

%T 3748141,4879729,12960061,22667191,26873929,29986651,35153119,

%U 62742331,65610091,108243319,131079709,200534041,252047503,294500053,454372003,466949029,639129121

%N Primes of the form n^4 + n + 1 with n positive.

%H Vincenzo Librandi, <a href="/A272571/b272571.txt">Table of n, a(n) for n = 1..1000</a>

%t Select[Table[n^4 + n + 1, {n, 100}], PrimeQ]

%o (Magma) [a: n in [0..200] | IsPrime(a) where a is n^4+n+1];

%o (PARI) lista(nn) = {for(n=1, nn, if(ispseudoprime(p=n^4+n+1), print1(p, ", "))); } \\ _Altug Alkan_, May 04 2016

%Y Cf. A002383, A245488, A272572.

%K nonn

%O 1,1

%A _Vincenzo Librandi_, May 03 2016

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Last modified April 28 09:53 EDT 2024. Contains 372037 sequences. (Running on oeis4.)