A173769 Primes in A154117.

2, 7, 17, 37, 157, 317, 1277, 2557, 20477, 655357, 5242877, 671088637, 2684354557, 5368709117, 343597383677, 23058430092136939517, 23611832414348226068477, 48357032784585166988247037, 830767497365572420564879412675215357

Offset: 1

Author

Vincenzo Librandi, Mar 05 2010

Keywords

• nonn
• easy

Comments

Apart from the first term, the same as A172156. - R. J. Mathar, Mar 17 2010

Primes of the form 5*2^n-3.

Links

• Vincenzo Librandi, Table of n, a(n) for n = 1..38

Programs

Magma

[ a: n in [0..150] | IsPrime(a) where a is 5*2^n-3 ];

Mathematica

 Select[Table[5*2^n-3,{n,0,300}],PrimeQ] (* Vincenzo Librandi, Jul 26 2012 *)

Extensions

Edited by N. J. A. Sloane, Mar 17 2010