A155854 Numbers n such that 13*n + 3 is not prime.

1, 3, 4, 5, 6, 7, 9, 10, 11, 12, 13, 14, 15, 17, 18, 19, 21, 22, 23, 24, 25, 26, 27, 29, 30, 31, 33, 34, 35, 36, 37, 38, 39, 41, 42, 43, 44, 45, 47, 48, 49, 51, 52, 53, 54, 55, 56, 57, 59, 60, 61, 63, 64, 65, 66, 67, 69, 70, 71, 72, 73, 74, 75, 77, 78, 79, 80, 81, 83, 84, 85, 86, 87

Offset

1,2

Links

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

Mathematica

Select[Range[100], !PrimeQ[13 # + 3] &]

Prog

(Magma) [n: n in [0..90] | not IsPrime(13*n + 3)]; // Vincenzo Librandi, Oct 15 2012

Crossrefs

Cf. A100202, A155853.

Sequence in context: A194276 A184336 A183300 * A047252 A039235 A247782

Adjacent sequences: A155851 A155852 A155853 * A155855 A155856 A155857

Keyword

nonn,easy

Author

Vincenzo Librandi, Jan 29 2009

Extensions

Data corrected by Harvey P. Dale, Sep 11 2011

Status

approved