A102711 Numbers k such that 11*k + 7 is prime.

0, 2, 6, 12, 20, 24, 26, 30, 32, 44, 50, 54, 66, 74, 80, 86, 90, 92, 96, 102, 104, 110, 116, 120, 132, 134, 146, 150, 156, 162, 164, 170, 180, 186, 194, 200, 204, 206, 212, 216, 240, 246, 254, 272, 282, 300, 302, 306, 314, 320, 324, 326, 330, 332, 342, 356, 360

Offset

1,2

Links

Daniel Starodubtsev, Table of n, a(n) for n = 1..10000

Example

If k=0, then 11*0 + 7 = 7 (prime).
If k=44, then 11*44 + 7 = 491 (prime).
If k=102, then 11*102 + 7 = 1129 (prime).

Mathematica

Select[Range[0, 400], PrimeQ[11#+7]&] (* Harvey P. Dale, Dec 13 2012 *)

Prog

(Magma) [n: n in [0..1000] | IsPrime(11*n + 7 )] // Vincenzo Librandi, Nov 17 2010
(PARI) is(n)=isprime(11*n+7) \\ Charles R Greathouse IV, Jun 12 2017

Crossrefs

Cf. A102646.

Sequence in context: A139082 A061078 A067114 * A235375 A141406 A045619

Adjacent sequences: A102708 A102709 A102710 * A102712 A102713 A102714

Keyword

nonn,easy

Author

Parthasarathy Nambi, Feb 05 2005

Status

approved