A129071 Numbers n such that (n-7)/6 is prime.

19, 25, 37, 49, 73, 85, 109, 121, 145, 181, 193, 229, 253, 265, 289, 325, 361, 373, 409, 433, 445, 481, 505, 541, 589, 613, 625, 649, 661, 685, 769, 793, 829, 841, 901, 913, 949, 985, 1009, 1045, 1081, 1093, 1153, 1165, 1189, 1201, 1273, 1345, 1369, 1381

Offset

1,1

Links

Harvey P. Dale, Table of n, a(n) for n = 1..1000

Formula

a(n) = 6*prime(n) + 7. - Zak Seidov, May 12 2007

Example

For n=19, (19-7)/6 = 2 which is prime so 19 is the first entry.

Mathematica

Select[Range[1500], PrimeQ[(#-7)/6]&] (* Harvey P. Dale, Aug 15 2015 *)

Prog

(PARI) g(m) = forprime(p=2, m, n=6*p+7; print1(n", "))

Crossrefs

Cf. A000040.

Sequence in context: A061841 A219957 A276437 * A066125 A181691 A039342

Adjacent sequences: A129068 A129069 A129070 * A129072 A129073 A129074

Keyword

easy,nonn

Author

Cino Hilliard, May 11 2007, May 17 2007

Status

approved