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Numbers n such that 11*n - 5 is prime.
3

%I #14 Aug 20 2019 02:17:03

%S 2,6,8,12,14,18,26,32,42,44,48,62,68,72,74,78,84,86,96,102,114,126,

%T 132,144,146,152,158,162,176,182,188,194,204,216,218,222,224,228,236,

%U 242,252,254,258,284,288,294,296,306,314,324,326,336,344,348,354,356,366

%N Numbers n such that 11*n - 5 is prime.

%H Robert Israel, <a href="/A108187/b108187.txt">Table of n, a(n) for n = 1..10000</a>

%e If n=2, then 11*n - 5 = 17 (prime).

%e If n=44, then 11*n - 5 = 479 (prime).

%p a:=proc(n) if isprime(11*n-5)=true then n else fi end:seq(a(n),n=0..500); # _Emeric Deutsch_, Jun 22 2005

%t Select[Range@ 366, PrimeQ[11 # - 5] &] (* _Michael De Vlieger_, Feb 20 2017 *)

%o (PARI) is(n)=isprime(11*n-5) \\ _Charles R Greathouse IV_, May 22 2017

%K nonn

%O 1,1

%A _Parthasarathy Nambi_, Jun 14 2005

%E More terms from _Emeric Deutsch_, Jun 22 2005