A155939 Numbers n such that 13*n + 8 is not a prime.

0, 1, 2, 4, 6, 7, 8, 9, 10, 12, 13, 14, 15, 16, 18, 19, 20, 22, 24, 25, 26, 28, 29, 30, 31, 32, 33, 34, 36, 37, 38, 39, 40, 42, 43, 44, 46, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 64, 66, 67, 68, 69, 70, 71, 72, 73, 74, 76, 78, 79, 80, 82, 84, 85, 86, 87, 88

Offset

1,3

Links

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

Mathematica

Select[Range[0, 2800], !PrimeQ[13 # + 8] &] (* Vincenzo Librandi, Ocy 15 2012 *)

Prog

(Magma) [n: n in [0..90] |not IsPrime(13*n + 8)]; // Vincenzo Librandi, Oct 15 2012

Crossrefs

Cf. A092178, A155937 (complement).

Sequence in context: A039098 A015860 A147613 * A114145 A153351 A153343

Adjacent sequences: A155936 A155937 A155938 * A155940 A155941 A155942

Keyword

nonn,easy

Author

Vincenzo Librandi, Jan 31 2009

Status

approved