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A153822 Numbers 41*k such that 41*k+2 and 41*k-6 are both prime. 1
2009, 2747, 5699, 10865, 14555, 19475, 21935, 23165, 26117, 28577, 34727, 37187, 41615, 45059, 47519, 51947, 54407, 55637, 56129, 56375, 61049, 67937, 69659, 73595, 78515, 80237, 86387, 94259, 99179, 100409, 101147, 105329, 114677, 118367 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

G. C. Greubel, Table of n, a(n) for n = 1..1000

EXAMPLE

2009 = 41*49 and 2009 + 2 = 2011 and 2009 - 6 = 2003 are both prime.

MATHEMATICA

Select[41Range[3000], PrimeQ[#+2]&&PrimeQ[#-6]&]  (* Harvey P. Dale, Mar 26 2011 *)

PROG

(MAGMA) [n: n in [0..200000 by 41] |  IsPrime(n+2) and IsPrime(n-6)]; // Vincenzo Librandi, Aug 31 2016

CROSSREFS

Sequence in context: A172735 A172780 A172807 * A153779 A332445 A162242

Adjacent sequences:  A153819 A153820 A153821 * A153823 A153824 A153825

KEYWORD

nonn

AUTHOR

John L. Drost, Jan 02 2009

EXTENSIONS

Corrected by Harvey P. Dale, Mar 26 2011

STATUS

approved

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Last modified August 19 16:39 EDT 2022. Contains 356229 sequences. (Running on oeis4.)