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%I #12 Sep 08 2022 08:45:35
%S 17,37,97,137,157,197,257,277,317,337,397,457,557,577,617,677,757,797,
%T 857,877,937,977,997,1097,1117,1217,1237,1277,1297,1597,1637,1657,
%U 1697,1777,1877,1997,2017,2137,2237,2297,2357,2377,2417,2437,2477,2557,2617,2657
%N Primes congruent to 17 mod 20.
%H Vincenzo Librandi, <a href="/A141886/b141886.txt">Table of n, a(n) for n = 1..1000</a>
%F a(n) ~ 8n log n. - _Charles R Greathouse IV_, Jul 02 2016
%t Select[Range[17,5000,20],PrimeQ[#]&] (* _Vladimir Joseph Stephan Orlovsky_, Mar 31 2011*)
%o (Magma) [p: p in PrimesUpTo(3000) | p mod 20 eq 17 ]; // _Vincenzo Librandi_, Aug 16 2012
%o (PARI) is(n)=isprime(n) && n%20==17 \\ _Charles R Greathouse IV_, Jul 02 2016
%Y Cf. A000040, A105854, A141881, A141882, A141883.
%K nonn,easy
%O 1,1
%A _N. J. A. Sloane_, Jul 11 2008
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