A075746 - OEIS

%I #12 Sep 08 2022 08:45:07

%S 1,3,4,8,9,10,11,14,15,16,17,18,21,23,25,27,28,30,33,34,36,37,40,41,

%T 42,44,45,47,48,50,53,59,62,63,67,71,72,74,75,80,82,83,84,85,86,87,94,

%U 95,96,97,102,103,105,106,109,110,111,115,118,119,125,129,133,136,140,149

%N Numbers n such that 210*n-13 is prime.

%H Vincenzo Librandi, <a href="/A075746/b075746.txt">Table of n, a(n) for n = 1..1000</a>

%e n=1: 210*1-13=197 is prime.

%t Select[Range[500], PrimeQ[210*# - 13] &] (* _Vincenzo Librandi_, Oct 04 2012 *)

%o (Magma) [n: n in [0..150]| IsPrime(210*n - 13)]; // _Vincenzo Librandi_, Oct 04 2012

%o (PARI) is(n)=isprime(210*n-13) \\ _Charles R Greathouse IV_, Jun 12 2017

%K easy,nonn

%O 1,2

%A _Zak Seidov_, Oct 08 2002