A138622 Nonnegative integers k such that 14*k-1 is prime.

1, 3, 6, 7, 10, 12, 13, 16, 18, 21, 22, 25, 30, 31, 33, 36, 42, 43, 46, 52, 55, 57, 58, 60, 61, 63, 67, 73, 75, 76, 78, 87, 88, 90, 93, 100, 102, 106, 108, 111, 112, 115, 117, 121, 123, 127, 132, 133, 135, 138, 141, 142, 145, 150, 151, 153, 160, 162, 163

Offset

1,2

Links

Daniel Starodubtsev, Table of n, a(n) for n = 1..10000

Example

14*1-1=13, 14*3-1=41, 14*6-1=83, ...

Mathematica

a={}; Do[x=14*n-1; If[PrimeQ[x], AppendTo[a, n]], {n, 10^2}]; a
Select[Range[200], PrimeQ[14#-1]&] (* Harvey P. Dale, May 01 2013 *)

Crossrefs

Cf. A045473.

Sequence in context: A173059 A189387 A091087 * A080147 A192593 A289009

Adjacent sequences: A138619 A138620 A138621 * A138623 A138624 A138625

Keyword

nonn

Author

Vladimir Joseph Stephan Orlovsky, May 14 2008

Extensions

More terms from Harvey P. Dale, May 01 2013

Status

approved