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A176617 Primes of the form 14*k^2 + 26*k + 13. 2

%I #17 Sep 08 2022 08:45:52

%S 13,53,673,881,1117,1381,1993,2341,3121,4013,6133,6733,8017,9413,

%T 11717,12541,25801,27017,36313,43793,51973,53693,55441,59021,64601,

%U 80713,85021,96281,100981,123517,128833,139801,160073,169181,175393,181717

%N Primes of the form 14*k^2 + 26*k + 13.

%C All terms are congruent to 1 (mod 4).

%t Select[Table[14n^2+26n+13, {n,0,200}], PrimeQ] (* _Harvey P. Dale_, Jan 04 2011 *)

%o (Magma) [ a: n in [0..250] | IsPrime(a) where a is 14*n^2+26*n+13 ] // _Vincenzo Librandi_, Apr 25 2010

%Y Cf. A176608, A176616.

%K easy,nonn

%O 1,1

%A _Giovanni Teofilatto_, Apr 22 2010

%E Definition made more precise by _R. J. Mathar_, May 04 2010

%E Corrected (inserted 13) and extended by _Vincenzo Librandi_, Apr 25 2010

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Last modified April 25 10:01 EDT 2024. Contains 371967 sequences. (Running on oeis4.)