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

13, 53, 673, 881, 1117, 1381, 1993, 2341, 3121, 4013, 6133, 6733, 8017, 9413, 11717, 12541, 25801, 27017, 36313, 43793, 51973, 53693, 55441, 59021, 64601, 80713, 85021, 96281, 100981, 123517, 128833, 139801, 160073, 169181, 175393, 181717

Offset: 1

Author

Giovanni Teofilatto, Apr 22 2010

Keywords

• easy
• nonn

Comments

All terms are congruent to 1 (mod 4).

Crossrefs

Cf. A176608, A176616.

Programs

Magma

[ a: n in [0..250] | IsPrime(a) where a is 14*n^2+26*n+13 ] // Vincenzo Librandi, Apr 25 2010

Mathematica

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

Extensions

Definition made more precise by R. J. Mathar, May 04 2010

Corrected (inserted 13) and extended by Vincenzo Librandi, Apr 25 2010