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A254672 Primes prime(n) such that prime(n) + 6*n is also prime. 2

%I

%S 5,7,11,17,19,29,31,37,43,47,53,67,71,73,79,89,101,109,113,127,149,

%T 151,157,167,181,191,193,197,227,257,263,271,277,281,331,347,349,379,

%U 383,431,433,449,467,479,499,509,521,523,547,563,569,571,577,587,619,631

%N Primes prime(n) such that prime(n) + 6*n is also prime.

%H Vincenzo Librandi, <a href="/A254672/b254672.txt">Table of n, a(n) for n = 1..1000</a>

%e prime(5) = 11 is in the sequence because 11 + 6*5 = 41 is prime.

%e prime(8) = 19 is in the sequence because 19 + 6*8 = 67 is prime.

%t Prime[Select[Range[150], PrimeQ[Prime[#] + 6 #] &]]

%o (MAGMA) [NthPrime(n): n in [1..200] | IsPrime(NthPrime(n)+6*n)]

%Y Cf. A061067, A231232, A231383, A254462, A254665, A254673.

%K nonn

%O 1,1

%A _Vincenzo Librandi_, Feb 05 2015

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Last modified April 13 15:23 EDT 2021. Contains 342936 sequences. (Running on oeis4.)