OFFSET
1,1
COMMENTS
a(9) has 1310 digits. - Bruno Berselli, Jul 26 2012
LINKS
Vincenzo Librandi, Table of n, a(n) for n = 1..8
MATHEMATICA
Select[Table[(4*10^n+23)/9, {n, 0, 100}], PrimeQ] (* Vincenzo Librandi, Jul 26 2012 *)
PROG
(Magma) [a: n in [0..100] | IsPrime(a) where a is (4*10^n+23)div 9 ]; // Vincenzo Librandi, Jul 26 2012
CROSSREFS
KEYWORD
nonn
AUTHOR
Vincenzo Librandi, Feb 24 2010
STATUS
approved