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A167056 Numbers n such that 12*n + 7 is prime. 5

%I #11 Sep 08 2022 08:45:48

%S 0,1,2,3,5,6,8,10,11,12,13,16,17,18,22,23,25,27,30,31,36,38,40,41,43,

%T 45,47,50,51,52,53,57,60,61,62,65,67,68,71,73,75,76,80,82,86,87,88,90,

%U 93,97,102,106,107,108,110,116,118,120,121,122,123,127,128,130,131,135,138

%N Numbers n such that 12*n + 7 is prime.

%C Corresponds to odd numbers in A024899.

%H Vincenzo Librandi, <a href="/A167056/b167056.txt">Table of n, a(n) for n = 1..1000</a>

%e 2 is in the sequence since 12*2+7 = 31 is prime.

%t Select[Range[0, 200], PrimeQ[12 # + 7] &] (* _Vincenzo Librandi_, May 20 2014 *)

%o (PARI) isA167056(n) = isprime(12*n+7)

%o (Magma) [n: n in [1..150] | IsPrime(12*n+7)]; // _Vincenzo Librandi_, May 20 2014

%Y A110801, A167055, A167057, A024899, primes are in A068229.

%K easy,nonn

%O 1,3

%A _Michael B. Porter_, Oct 27 2009

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Last modified April 24 08:59 EDT 2024. Contains 371935 sequences. (Running on oeis4.)