login

Year-end appeal: Please make a donation to the OEIS Foundation to support ongoing development and maintenance of the OEIS. We are now in our 61st year, we have over 378,000 sequences, and we’ve reached 11,000 citations (which often say “discovered thanks to the OEIS”).

A107306
Numbers k such that (17*k - 19) is prime.
2
6, 10, 24, 28, 30, 36, 40, 48, 58, 64, 66, 70, 78, 84, 90, 94, 96, 106, 118, 124, 136, 150, 156, 166, 168, 174, 180, 184, 196, 198, 204, 208, 226, 238, 244, 250, 274, 276, 288, 300, 318, 328, 330, 334, 336, 348, 358, 360, 366, 370, 376, 388, 394, 400, 406, 408
OFFSET
1,1
COMMENTS
17 and 19 are twin primes.
LINKS
EXAMPLE
If k=64 then 17*k - 19 = 1069 (prime).
MATHEMATICA
Select[Range[2, 500], PrimeQ[17#-19]&] (* Harvey P. Dale, Jan 15 2015 *)
PROG
(Magma) [n: n in [2..100000] | IsPrime(17*n - 19)]; // Vincenzo Librandi, Nov 13 2010
(PARI) is(n)=isprime((17*n-19)) \\ Charles R Greathouse IV, Jun 12 2017
CROSSREFS
Cf. A140543 (the resulting primes).
Sequence in context: A199885 A024499 A143236 * A108899 A074289 A109099
KEYWORD
nonn,easy
AUTHOR
Parthasarathy Nambi, May 20 2005
STATUS
approved