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A137874 Prime numbers, isolated from neighboring primes by >14. 2
2179, 2503, 3137, 3433, 3967, 4177, 4621, 5623, 6637, 7369, 7393, 7433, 7993, 9257, 11027, 11197, 11213, 11657, 13649, 14107, 14369, 15859, 16033, 16301, 16787, 16963, 17077, 17257, 17807, 18013, 18617, 18637, 18839, 19121, 19661, 20201 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

The definition means that p+-2, p+-4, p+-6, p+-8, p+-10, p+-12 and p+-14 are all composite. - N. J. A. Sloane, Jun 04 2008

LINKS

Table of n, a(n) for n=1..36.

MATHEMATICA

q=14; s=""; For[i=1, i<12^2, p=Prime[i]; a=0; For[j=2, j<=q, If[PrimeQ[p-j]||PrimeQ[p+j], a=1; Break[]]; j=j+2]; If[a==0, s=s<>ToString[p]<>", "]; i++ ]; Print[s]

Prime[Select[Range[2, 3000], Prime[ #-1]+14<Prime[ # ]<Prime[ #+1]-14&]] (* Ray Chandler, May 02 2009 *)

CROSSREFS

Sequence in context: A035770 A107566 A073142 * A137875 A020425 A253519

Adjacent sequences:  A137871 A137872 A137873 * A137875 A137876 A137877

KEYWORD

nonn

AUTHOR

Vladimir Joseph Stephan Orlovsky, Apr 29 2008

EXTENSIONS

Extended by Ray Chandler, May 02 2009

STATUS

approved

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Last modified September 28 17:43 EDT 2020. Contains 337393 sequences. (Running on oeis4.)