A142511 - OEIS

%I #9 Sep 08 2022 08:45:36

%S 7,59,163,631,683,787,839,1151,1307,1567,1619,1723,1879,1931,2087,

%T 2243,2347,2399,2503,2659,2711,2971,3023,3491,3803,3907,4219,4271,

%U 4583,4999,5051,5519,5623,5779,5987,6091,6143,6247,6299,6871,7027,7079,7547,7703

%N Primes congruent to 7 mod 52.

%H Vincenzo Librandi, <a href="/A142511/b142511.txt">Table of n, a(n) for n = 1..1000</a>

%F a(n) ~ 24n log n. - _Charles R Greathouse IV_, Jul 03 2016

%t Select[Prime[Range[1300]], MemberQ[{7}, Mod[#, 52]] &] (* _Vincenzo Librandi_, Aug 29 2012 *)

%o (Magma) [p: p in PrimesUpTo(9000) | p mod 52 eq 7]; // _Vincenzo Librandi_, Aug 29 2012

%o (PARI) is(n)=isprime(n) && n%52==7 \\ _Charles R Greathouse IV_, Jul 03 2016

%Y Cf. A000040.

%K nonn,easy

%O 1,1

%A _N. J. A. Sloane_, Jul 11 2008