A142287 - OEIS

%I #11 Sep 08 2022 08:45:36

%S 167,683,769,941,1543,1801,1973,2833,3607,3779,4639,5413,5843,6101,

%T 6359,6703,6961,7219,7477,7649,7907,7993,8423,8681,9283,10487,10831,

%U 11003,11261,11519,11777,11863,12379,12637,12809,13411,13669,13841,15131,15217,15647

%N Primes congruent to 38 mod 43.

%H Vincenzo Librandi, <a href="/A142287/b142287.txt">Table of n, a(n) for n = 1..1000</a>

%F a(n) ~ 42n log n. - _Charles R Greathouse IV_, Jul 03 2016

%t Select[Prime[Range[5000]],MemberQ[{38},Mod[#,43]]&] (* _Vincenzo Librandi_, Aug 25 2012 *)

%t Select[Range[38,16000,43],PrimeQ] (* _Harvey P. Dale_, Sep 06 2017 *)

%o (Magma) [p: p in PrimesUpTo(16000) | p mod 43 eq 38 ]; // _Vincenzo Librandi

%o (PARI) is(n)=isprime(n) && n%43==38 \\ _Charles R Greathouse IV_, Jul 03 2016

%Y Cf. A000040.

%K nonn,easy

%O 1,1

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