A189242 Numbers n such that 24*n+17 is not prime.

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

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 A362462 A287321

Adjacent sequences: A189239 A189240 A189241 * A189243 A189244 A189245

Keyword

nonn,easy

Author

Vincenzo Librandi, Apr 19 2011

Status

approved