OFFSET
1,1
LINKS
Vincenzo Librandi, Table of n, a(n) for n = 1..38
EXAMPLE
1283 is a term as a concatenation of 2^7 and 3.
MATHEMATICA
Select[5*2^Range[60]+3, PrimeQ] (* Harvey P. Dale, Feb 04 2011 *)
PROG
(PARI) for(n=1, 150, if(isprime(2^n*5+3)==1, print1(2^n*5+3, ", ")))
(Magma) [a: n in [1..100] | IsPrime(a) where a is 5*2^n + 3]; // Vincenzo Librandi, Dec 08 2011
CROSSREFS
KEYWORD
nonn
AUTHOR
Amarnath Murthy, Mar 05 2002
EXTENSIONS
More terms from Benoit Cloitre, Mar 09 2002
STATUS
approved