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 A241571 Numbers n such that 2*n+15 is not a prime. 2
 0, 3, 5, 6, 9, 10, 12, 15, 17, 18, 20, 21, 24, 25, 27, 30, 31, 33, 35, 36, 38, 39, 40, 42, 45, 48, 50, 51, 52, 53, 54, 55, 57, 59, 60, 63, 64, 65, 66, 69, 70, 72, 73, 75, 77, 78, 80, 81, 84, 85, 86, 87, 90, 93, 94, 95, 96, 97, 99, 100, 101, 102, 103, 105, 108 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,2 LINKS Vincenzo Librandi, Table of n, a(n) for n = 1..1000 MATHEMATICA Select[Range[0, 200], !PrimeQ[2 # + 15] &] PROG (MAGMA) [n: n in [0..200] | not IsPrime(2*n+15)]; CROSSREFS Complement of A089559. Cf. similar sequence listed in A153144. Sequence in context: A227455 A237417 A165740 * A080307 A001969 A075311 Adjacent sequences:  A241568 A241569 A241570 * A241572 A241573 A241574 KEYWORD nonn,easy AUTHOR Vincenzo Librandi, Apr 27 2014 STATUS approved

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Last modified December 10 16:44 EST 2018. Contains 318049 sequences. (Running on oeis4.)