A142268 - OEIS

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

%S 19,191,277,449,1051,1223,1481,1567,1997,2083,2341,2857,3373,3631,

%T 3803,3889,4663,5179,5351,5437,5867,5953,6211,6469,6899,7243,7673,

%U 7759,8017,8447,8963,9049,9221,9479,10253,10597,11027,11113,11801,11887,12919,13177

%N Primes congruent to 19 mod 43.

%H Vincenzo Librandi, <a href="/A142268/b142268.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[{19},Mod[#,43]]&] (* _Vincenzo Librandi_, Aug 25 2012 *)

%o (Magma) [p: p in PrimesUpTo(16000) | p mod 43 eq 19 ]; // _Vincenzo Librandi_, Aug 25 2012

%o (PARI) is(n)=isprime(n) && n%43==19 \\ _Charles R Greathouse IV_, Jul 03 2016

%Y Cf. A000040.

%K nonn,easy

%O 1,1

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