A023312 - OEIS

%I #19 Sep 08 2022 08:44:47

%S 883,2857,4073,4663,9311,11131,16493,18257,19541,22063,28687,35837,

%T 48383,55817,59393,62131,71387,73037,73133,78173,83423,86111,88261,

%U 90511,93287,93811,99377,101051,104537,122203,125927,149497,152377,153941,155653

%N Primes that remain prime through 4 iterations of function f(x) = 4x + 9.

%C Primes p such that 4*p+9, 16*p+45, 64*p+189 and 256*p+765 are also primes. - _Vincenzo Librandi_, Aug 04 2010

%H John Cerkan, <a href="/A023312/b023312.txt">Table of n, a(n) for n = 1..10000</a>

%o (Magma) [n: n in [1..1000000] | IsPrime(n) and IsPrime(4*n+9) and IsPrime(16*n+45) and IsPrime(64*n+189) and IsPrime(256*n+765)] // _Vincenzo Librandi_, Aug 04 2010

%Y Subsequence of A023216, A023251, A023282, and A111199.

%K nonn

%O 1,1

%A _David W. Wilson_