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 A155945 Numbers n such that 24*n + 13 is not prime. 1
 3, 5, 8, 10, 12, 13, 18, 19, 20, 21, 23, 24, 26, 28, 32, 33, 37, 38, 39, 40, 43, 47, 48, 49, 52, 53, 54, 55, 56, 58, 61, 62, 63, 65, 68, 71, 73, 75, 76, 78, 79, 81, 82, 83, 86, 87, 88, 89, 90, 91, 93, 96, 98, 100 (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: *; *,*; *,*,*; *,*,*,*; *,*,*,*,*; *,*,*,*,*,*; *,*,*,*,*,*,*; *,3,*,*,*,*,*,*; *,*,5,*,*,*,*,*,*; *,*,*,*,*,*,*,*,*,*; *,*,*,*,10,*,*,*,*,*,*; *,*,*,*,*,13,*,*,*,*,*,*; etc. where * marks the non-integer values of (2*h*k + k + h - 6)/12 with h >= k >= 1. - Vincenzo Librandi, Jan 15 2013 MATHEMATICA Select[Range[0, 100], !PrimeQ[24 # + 13] &] (* Vincenzo Librandi, Oct 15 2012 *) PROG (Magma) [n: n in [0..100] |not IsPrime(24*n + 13)]; // Vincenzo Librandi, Oct 15 2012 CROSSREFS Cf. A139529, A139530. Sequence in context: A282897 A189377 A073608 * A096985 A206909 A138829 Adjacent sequences: A155942 A155943 A155944 * A155946 A155947 A155948 KEYWORD nonn,easy AUTHOR Vincenzo Librandi, Jan 31 2009 STATUS approved

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Last modified November 26 21:15 EST 2022. Contains 358362 sequences. (Running on oeis4.)