A142802 - OEIS

%I #11 Sep 08 2022 08:45:37

%S 431,797,919,1163,2017,2383,2749,3359,3847,4091,4457,5189,6043,6287,

%T 6653,7019,7507,7873,8117,8849,8971,9337,10069,10313,11411,11777,

%U 12143,13241,13729,14461,14827,15193,15559,15803,16657,16901,17389,18121,18731,19219

%N Primes congruent to 4 mod 61.

%H Vincenzo Librandi, <a href="/A142802/b142802.txt">Table of n, a(n) for n = 1..1000</a>

%t Select[Prime[Range[2700]], MemberQ[{4}, Mod[#, 61]] &] (* _Vincenzo Librandi_, Sep 05 2012 *)

%t Select[Range[4,20000,61],PrimeQ] (* _Harvey P. Dale_, Dec 09 2013 *)

%o (Magma) [p: p in PrimesUpTo(22000) | p mod 61 eq 4 ]; // _Vincenzo Librandi_, Sep 05 2012

%Y Cf. A000040.

%K nonn,easy

%O 1,1

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