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%I #11 Sep 08 2022 08:45:36
%S 3,101,199,787,983,1277,1571,1669,2551,3041,3433,3727,3923,4021,4217,
%T 4903,5099,5197,5393,5981,6079,6373,6569,6863,6961,7451,7549,8039,
%U 8431,8627,9803,9901,10391,10979,11273,11959,12253,12547,12743,12841,13037,13331
%N Primes congruent to 3 mod 49.
%H Vincenzo Librandi, <a href="/A142416/b142416.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[2500]], MemberQ[{3}, Mod[#, 49]] &] (* _Vincenzo Librandi_, Aug 27 2012 *)
%t Select[Range[3,14000,98],PrimeQ] (* _Harvey P. Dale_, Jan 16 2013 *)
%o (Magma) [p: p in PrimesUpTo(16000) | p mod 49 eq 3]; // _Vincenzo Librandi_, Aug 27 2012
%o (PARI) is(n)=isprime(n) && n%49==3 \\ _Charles R Greathouse IV_, Jul 03 2016
%Y Cf. A000040.
%K nonn,easy
%O 1,1
%A _N. J. A. Sloane_, Jul 11 2008
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