A140562 Primes p such that p + 26 is not a prime.

2, 7, 13, 19, 23, 29, 31, 37, 43, 59, 61, 67, 73, 79, 89, 97, 103, 107, 109, 127, 139, 149, 151, 157, 163, 179, 181, 191, 193, 199, 211, 223, 227, 229, 233, 239, 241, 263, 269, 271, 277, 283, 293, 307, 313, 317, 331, 337, 349, 359, 367, 373, 379, 389, 397, 401

Offset

1,1

Links

Table of n, a(n) for n=1..56.

Mathematica

Select[Prime[Range[500]], !PrimeQ[#+26]&] (* Harvey P. Dale, Oct 30 2011 *)

Prog

(Magma) [p: p in PrimesUpTo(1000)|not IsPrime(p+26)] // Vincenzo Librandi, Dec 18 2010

Crossrefs

Sequence in context: A001966 A209886 A168465 * A155547 A007821 A156007

Adjacent sequences: A140559 A140560 A140561 * A140563 A140564 A140565

Keyword

nonn

Author

Juri-Stepan Gerasimov, Jul 03 2008

Extensions

Corrected (13 inserted) by R. J. Mathar, Apr 25 2010

Status

approved