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 A087697 Numbers k such that k + 7 and k - 7 are both prime. 13
 10, 12, 24, 30, 36, 54, 60, 66, 90, 96, 120, 144, 156, 174, 186, 204, 234, 264, 270, 276, 300, 324, 360, 366, 390, 426, 450, 456, 516, 564, 570, 594, 600, 606, 624, 654, 666, 684, 726, 750, 780, 804, 816, 846, 870, 960, 984, 990 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 LINKS Robert Israel, Table of n, a(n) for n = 1..10000 MAPLE select(t -> isprime(t+7) and isprime(t-7), [seq(i, i=8..1000, 2)]); # Robert Israel, Jul 22 2018 MATHEMATICA Rest[Select[Range[1000], PrimeQ[# - 7] && PrimeQ[# + 7] &]] (* Vincenzo Librandi, Jul 23 2018 *) PROG (PARI) isok(n) = isprime(n-7) && isprime(n+7); \\ Michel Marcus, Jul 23 2018 (MAGMA) [n: n in [5..1000] | IsPrime(n-7) and IsPrime(n+7)]; // Vincenzo Librandi, Jul 23 2018 CROSSREFS Cf. A014574, A087678, A087679, A087680, A087681, A087682, A087683, A087695, A087696, A088767. Sequence in context: A022324 A084953 A235686 * A241177 A140972 A108901 Adjacent sequences:  A087694 A087695 A087696 * A087698 A087699 A087700 KEYWORD nonn,easy AUTHOR Zak Seidov, Sep 27 2003 STATUS approved

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Last modified September 26 01:25 EDT 2020. Contains 337346 sequences. (Running on oeis4.)