OFFSET
1,1
LINKS
Harry J. Smith, Table of n, a(n) for n = 1..1000
PROG
(PARI) pi(x, c=0) = forprime(p=2, x, c++); c for(n=1, 1000, if(isprime(pi(n^2)), print1(n, " ")))
(PARI) { n=0; default(primelimit, 3500000000); for (m=1, 10^9, if (isprime(primepi(m^2)), write("b064516.txt", n++, " ", m); if (n==1000, break)) ) } \\ Harry J. Smith, Sep 17 2009
CROSSREFS
KEYWORD
easy,nonn
AUTHOR
Jason Earls, Oct 07 2001
STATUS
approved