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 A189242 Numbers n such that 24*n+17 is not prime. 1
 2, 6, 7, 8, 12, 13, 15, 17, 19, 20, 22, 27, 28, 29, 30, 32, 34, 37, 41, 42, 44, 46, 47, 48, 51, 52, 54, 55, 57, 60, 62, 63, 65, 67, 68, 69, 72, 73, 74, 75, 76, 77, 80, 81, 82, 83, 84, 85, 87, 90, 91, 92, 93, 96, 97, 98, 102, 103, 104, 105, 106, 107, 111, 112, 117, 118 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 LINKS Vincenzo Librandi, Table of n, a(n) for n = 1..1000 EXAMPLE Distribution of the terms in the following triangular array: *; *,*; *,*,*; *,*,*,*; *,*,*,*,*; *,2,*,*,*,*; *,*,*,*,*,*,*; *,*,*,*,*,*,*,*; *,*,*,*,8,*,*,*,*; *,*,*,*,*,*,*,*,*,*; *,*,6,*,*,*,*,*,*,*,*; *,*,*,*,*,*,*,17,*,*,*,*; etc. where * marks the non-integer values of (2*h*k + k + h - 8)/12 with h >= k >= 1. - Vincenzo Librandi, Jan 15 2013 MATHEMATICA Select[Range[1, 300], !PrimeQ[24 # + 17] &] (* Vincenzo Librandi, Aug 05 2012 *) PROG (MAGMA) [n: n in [0..200] | not IsPrime(24*n+17)]; // Vincenzo Librandi, Apr 19 2011 CROSSREFS Cf. A139531, A107181. Sequence in context: A194369 A039592 A037454 * A285160 A287321 A030366 Adjacent sequences:  A189239 A189240 A189241 * A189243 A189244 A189245 KEYWORD nonn,easy AUTHOR Vincenzo Librandi, Apr 19 2011 STATUS approved

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Last modified October 14 16:29 EDT 2019. Contains 328022 sequences. (Running on oeis4.)