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 A153264 Numbers n such that 16*n+15 is not prime. 1
 0, 3, 5, 6, 8, 9, 10, 12, 15, 17, 18, 19, 20, 21, 24, 25, 27, 30, 31, 32, 33, 34, 35, 36, 38, 39, 40, 41, 42, 43, 45, 47, 48, 49, 50, 51, 52, 54, 55, 57, 58, 59, 60, 62, 63, 65, 66, 69, 70, 72, 73, 74, 75, 77, 78, 80, 81, 83, 84, 85, 86, 87, 90, 93, 94, 95, 96, 99 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,2 LINKS Vincenzo Librandi, Table of n, a(n) for n = 1..1000 EXAMPLE Distribution of the terms in the following triangular array: *; 0,*; *,*,*; *,*,3,*; *,*,*,*,*; *,*,*,*,8,*; *,*,*,*,*,*,*; *,*,*,*,*,*,15,*; *,5,*,*,*,*,*,*,*; 3,*,*,*,*,*,*,*,24,*; *,*,*,12,*,*,*,*,*,*,*; *,*,10,*,*,*,*,*,*,*,35,*; etc. where * marks the non-integer values of (2*h*k + k + h - 7)/8 with h >= k >= 1. - Vincenzo Librandi, Jan 15 2013 MATHEMATICA Select[Range[0, 200], !PrimeQ[16 # + 15] &] (* Vincenzo Librandi, Jan 12 2013 *) PROG (MAGMA) [n: n in [0..150] | not IsPrime(16*n+15)]; // Vincenzo Librandi, Jan 12 2013 CROSSREFS Cf. A127575. Sequence in context: A307206 A026430 A002150 * A249595 A133561 A095117 Adjacent sequences:  A153261 A153262 A153263 * A153265 A153266 A153267 KEYWORD nonn,easy AUTHOR Vincenzo Librandi, Dec 22 2008 EXTENSIONS 0 added by Arkadiusz Wesolowski, Aug 03 2011 STATUS approved

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Last modified October 17 22:29 EDT 2019. Contains 328134 sequences. (Running on oeis4.)