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A089160 Numbers k such that 30*k + 11 and 30*k + 13 are twin primes. 2
0, 1, 2, 3, 6, 9, 10, 14, 15, 17, 21, 27, 29, 34, 35, 36, 38, 43, 48, 49, 57, 62, 64, 69, 70, 71, 79, 86, 90, 93, 108, 112, 115, 119, 122, 127, 128, 133, 136, 141, 142, 147, 149, 157, 164, 167, 174, 181, 183, 188, 191, 204, 218, 223, 225, 226, 240, 244, 274, 276, 295 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,3

COMMENTS

Solutions of the equation (30*x+11)' + (30*x+13)' = 2, where m' is the arithmetic derivative of m. - Paolo P. Lava, Nov 15 2012

LINKS

Amiram Eldar, Table of n, a(n) for n = 1..10000

EXAMPLE

30*3 + 11 = 101, 30*3 + 13 = 103; 101 and 103 are twin primes.

MATHEMATICA

Select[Range[0, 300], And@@PrimeQ[{30#+11, 30#+13}]&] (* Harvey P. Dale, Aug 15 2011 *)

PROG

(MAGMA) [n: n in [0..10000]|IsPrime(30*n+11)and IsPrime(30*n+13)] // Vincenzo Librandi, Nov 16 2010

CROSSREFS

Cf. A001097, A001359, A006512.

Sequence in context: A188399 A047284 A268692 * A214974 A286434 A288930

Adjacent sequences:  A089157 A089158 A089159 * A089161 A089162 A089163

KEYWORD

easy,nonn,changed

AUTHOR

Pierre CAMI, Dec 06 2003

STATUS

approved

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Last modified January 27 12:01 EST 2020. Contains 331295 sequences. (Running on oeis4.)