OFFSET
1,1
LINKS
Amiram Eldar, Table of n, a(n) for n = 1..10000
FORMULA
a(n) = A038098(prime(n)). - R. J. Mathar, Sep 15 2012
MATHEMATICA
a[n_] := PrimePi[Prime[n]^3]; Array[a, 50] (* Amiram Eldar, Sep 06 2024 *)
PROG
(PARI) a(n) = primepi(prime(n)^3); \\ Michel Marcus, Sep 18 2023
CROSSREFS
KEYWORD
easy,nonn
AUTHOR
Cino Hilliard, Jul 28 2003
STATUS
approved