A139530 -id:A139530 - cp's OEIS frontend

A139527 Numbers n such that numbers 24n+5 are primes.

0, 1, 2, 4, 6, 7, 8, 11, 12, 13, 16, 19, 21, 23, 27, 28, 29, 32, 33, 34, 39, 42, 44, 46, 49, 51, 53, 54, 57, 62, 67, 68, 71, 72, 78, 79, 81, 82, 83, 86, 89, 92, 93, 96, 97, 98, 99, 103, 106, 109, 112, 114, 116, 118, 119, 121, 123, 134, 141, 142, 144, 147, 148, 149, 153, 154

Offset: 1

Artur Jasinski, Apr 25 2008

nonn

Numbers n such that:
24n+1 is prime see A111174, primes 24n+1 see A107008
24n+5 is prime see A139527, primes 24n+5 see A107003
24n+7 is prime see A139483, primes 24n+7 see A107006
24n+11 is prime A139528, primes 24n+11 see A107007
24n+13 is prime see A139529, primes 24n+13 see A139530
24n+17 is prime see A139531, primes 24n+17 see A107181
24n+19 is prime see A139532, primes 24n+19 see A141373
24n+23 is prime see A131210, primes 24n+23 see A134517

Harvey P. Dale, Table of n, a(n) for n = 1..1000

a = {}; Do[If[PrimeQ[24 n + 5], AppendTo[a, n]], {n, 0, 200}]; a
Select[Table[(Prime[n]-5)/24,{n,800}],IntegerQ] (* Harvey P. Dale, Feb 25 2016 *)

A155945 Numbers n such that 24*n + 13 is not prime.

Original entry on oeis.org

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

Vincenzo Librandi, Jan 31 2009

			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

Vincenzo Librandi, Table of n, a(n) for n = 1..1000

Cf. A139529, A139530.

[n: n in [0..100] |not IsPrime(24*n + 13)]; // Vincenzo Librandi, Oct 15 2012

Select[Range[0, 100], !PrimeQ[24 # + 13] &] (* Vincenzo Librandi, Oct 15 2012 *)

cp's OEIS Frontend

A139527 Numbers n such that numbers 24n+5 are primes.

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