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A023202 Numbers n such that n and n + 8 both prime. 32
3, 5, 11, 23, 29, 53, 59, 71, 89, 101, 131, 149, 173, 191, 233, 263, 269, 359, 389, 401, 431, 449, 479, 491, 563, 569, 593, 599, 653, 683, 701, 719, 743, 761, 821, 911, 929, 983, 1013, 1031, 1061, 1109, 1163, 1193, 1223, 1229, 1283, 1289, 1319, 1373, 1439 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

T. D. Noe, Table of n, a(n) for n = 1..1000

A. Granville and G. Martin, Prime number races, arXiv:math/0408319 [math.NT], 2004.

Maxie D. Schmidt, New Congruences and Finite Difference Equations for Generalized Factorial Functions, arXiv:1701.04741 [math.CO], 2017.

Eric Weisstein's World of Mathematics, Twin Primes

MATHEMATICA

Select[Range[1000], PrimeQ[#] && PrimeQ[#+8]&] (* Vladimir Joseph Stephan Orlovsky, Aug 29 2008 *)

PROG

(MAGMA) [n: n in [0..1000] | IsPrime(n) and IsPrime(n+8)]; // Vincenzo Librandi, Nov 20 2010

(PARI) is(n)=isprime(n)&&isprime(n+8) \\ Charles R Greathouse IV, Jul 01 2013

CROSSREFS

Disjoint union of A007530, A031926, A049437, A049438. Cf. also A046134, A049436, A046138, A015915.

Sequence in context: A275785 A106901 A154550 * A049436 A117010 A056874

Adjacent sequences:  A023199 A023200 A023201 * A023203 A023204 A023205

KEYWORD

nonn,easy

AUTHOR

David W. Wilson

STATUS

approved

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Last modified October 23 07:11 EDT 2019. Contains 328336 sequences. (Running on oeis4.)