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 A098013 Differences between consecutive primes that are twice primes. 2
 4, 4, 4, 6, 6, 4, 4, 6, 6, 6, 4, 6, 4, 6, 4, 4, 4, 14, 4, 6, 10, 6, 6, 4, 6, 6, 10, 4, 4, 4, 6, 10, 6, 6, 6, 6, 4, 10, 14, 4, 4, 14, 6, 10, 4, 6, 6, 6, 4, 6, 4, 10, 10, 6, 4, 6, 4, 4, 4, 4, 6, 6, 10, 6, 6, 6, 10, 6, 6, 6, 6, 4, 10, 4, 6, 6, 4, 6, 10, 10, 6, 6, 4, 6, 4, 4, 14, 10, 10, 4, 10, 14, 4, 4, 14 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS 11 - 7 = 4 = double 2, the first entry in the table. LINKS Robert Israel, Table of n, a(n) for n = 1..10000 MAPLE R:= NULL: count:= 0: q:= 2: p:= 3: while count < 100 do   q:= p; p:= nextprime(p);   if isprime((p-q)/2) then      count:= count+1; R:= R, p-q   fi od: R; # Robert Israel, Jun 05 2018 PROG (PARI) f(n) = for(x=1, n, y=prime(x+1)-prime(x); if(isprime(y\2), print1(y", "))) CROSSREFS Cf. A100484 (twice primes). Sequence in context: A160401 A114742 A273909 * A073229 A116446 A102126 Adjacent sequences:  A098010 A098011 A098012 * A098014 A098015 A098016 KEYWORD easy,nonn AUTHOR Cino Hilliard, Sep 09 2004 STATUS approved

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Last modified October 19 04:40 EDT 2019. Contains 328211 sequences. (Running on oeis4.)