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

Author

Vladimir Joseph Stephan Orlovsky, May 14 2008

Keywords

• nonn

Examples

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

Links

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

Crossrefs

Cf. A045473.

Programs

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 *)

Extensions

More terms from Harvey P. Dale, May 01 2013