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Numbers n such that 2*n+17 is not a prime.
2

%I #8 Sep 08 2022 08:46:07

%S 2,4,5,8,9,11,14,16,17,19,20,23,24,26,29,30,32,34,35,37,38,39,41,44,

%T 47,49,50,51,52,53,54,56,58,59,62,63,64,65,68,69,71,72,74,76,77,79,80,

%U 83,84,85,86,89,92,93,94,95,96,98,99,100,101,102,104,107,109

%N Numbers n such that 2*n+17 is not a prime.

%H Vincenzo Librandi, <a href="/A241572/b241572.txt">Table of n, a(n) for n = 1..1000</a>

%t Select[Range[0, 200], ! PrimeQ[2 # + 17] &]

%o (Magma) [n: n in [0..200] | not IsPrime(2*n+17)];

%Y Complement of A173059.

%Y Cf. similar sequence listed in A153144.

%K nonn,easy

%O 1,1

%A _Vincenzo Librandi_, Apr 27 2014