login
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
OFFSET
1,1
LINKS
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
KEYWORD
nonn
AUTHOR
John L. Drost, Jan 02 2009
EXTENSIONS
Corrected by Harvey P. Dale, Mar 26 2011
STATUS
approved