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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
OFFSET
1,1
LINKS
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
Sequence in context: A282897 A189377 A073608 * A096985 A206909 A138829
KEYWORD
nonn,easy
AUTHOR
Vincenzo Librandi, Jan 31 2009
STATUS
approved