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A138628 Positive integers k such that 17*k-7 is prime. 1
4, 10, 12, 22, 24, 30, 34, 40, 48, 52, 54, 60, 72, 78, 88, 90, 100, 114, 118, 130, 132, 138, 144, 150, 160, 172, 178, 184, 192, 198, 204, 208, 214, 220, 222, 240, 250, 262, 264, 268, 270, 274, 282, 288, 292, 298, 312, 318, 324, 328, 342, 354, 358, 360, 372 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
LINKS
EXAMPLE
17*4-7=61, 17*10-7=163, 17*12-7=197, 17*22-7=367, ...
MATHEMATICA
a={}; Do[x=17*n-7; If[PrimeQ[x], AppendTo[a, n]], {n, 10^2}]; a
Select[Range[400], PrimeQ[17#-7]&] (* Harvey P. Dale, Jan 06 2011 *)
PROG
(Magma) [k:k in [1..372]|IsPrime(17*k-7)]; // Marius A. Burtea, Feb 12 2020
CROSSREFS
Sequence in context: A310345 A310346 A080285 * A050868 A007319 A352213
KEYWORD
nonn
AUTHOR
EXTENSIONS
Extended by Harvey P. Dale, Jan 06 2011
STATUS
approved

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Last modified February 24 05:54 EST 2024. Contains 370294 sequences. (Running on oeis4.)