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%I #11 Sep 08 2022 08:45:36
%S 5,103,397,593,691,887,1181,1279,1867,2063,2161,2357,2749,3533,3631,
%T 4219,4513,5003,5101,5297,5591,5689,6277,6473,6571,7159,7649,8237,
%U 8629,8923,9413,9511,10099,10589,10687,10883,11177,11471,11863,12157,12451,12647
%N Primes congruent to 5 mod 49.
%H Vincenzo Librandi, <a href="/A142418/b142418.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[{5}, Mod[#, 49]] &] (* _Vincenzo Librandi_, Aug 27 2012 *)
%t Select[Range[5,13000,49],PrimeQ] (* _Harvey P. Dale_, Jan 18 2017 *)
%o (Magma) [p: p in PrimesUpTo(16000) | p mod 49 eq 5]; // _Vincenzo Librandi_, Aug 27 2012 *)
%o (PARI) is(n)=isprime(n) && n%49==5 \\ _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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