OFFSET
1,1
LINKS
Vincenzo Librandi, Table of n, a(n) for n = 1..1000
FORMULA
a(n) = 9 + 10 * A104045(n). - Alois P. Heinz, Jan 19 2024
MATHEMATICA
Select[Table[100 n + 9, {n, 0, 700}], PrimeQ] (* Vincenzo Librandi, Jul 25 2012 *)
PROG
(Magma) [a: n in [0..250] | IsPrime(a) where a is 100*n+9]; // Vincenzo Librandi, Jul 25 2012
CROSSREFS
KEYWORD
nonn,easy
AUTHOR
Vincenzo Librandi, Oct 25 2009
STATUS
approved