A145482 - OEIS

%I #9 Jan 23 2017 19:16:02

%S 11,13,19,31,43,61,73,79,109,151,163,193,199,229,241,271,283,313,331,

%T 373,379,421,439,463,541,571,661,673,709,733,739,751,823,859,883,1009,

%U 1051,1129,1153,1201,1279,1453,1543,1549,1663,1669,1741,1759,1783,1789

%N Primes p such that 2p - 19 is prime.

%H Ivan Neretin, <a href="/A145482/b145482.txt">Table of n, a(n) for n = 1..10000</a>

%F a(n) = 2*A145476(n) - 19.

%t aa = {}; k = 19; Do[If[PrimeQ[(k + Prime[n])/2], AppendTo[aa, k + Prime[n])/2]], {n, 1, 500}];aa

%t (* Second program: *)

%t Select[Prime@ Range@ 300, And[PrimeQ@ #, # > 0] &[2 # - 19] &] (* _Michael De Vlieger_, Jan 23 2017 *)

%Y Cf. A063908-A063913, A092109, A145471-A145480.

%K nonn

%O 1,1

%A _Artur Jasinski_, Oct 11 2008