OFFSET
1,1
LINKS
Chai Wah Wu, Table of n, a(n) for n = 1..47
Thomas R. Nicely, Some Results of Computational Research in Prime Numbers [See local copy in A007053]
PROG
(PARI) a(n)=primepi(10^20*n) \\ Charles R Greathouse IV, Apr 29 2015
CROSSREFS
KEYWORD
hard,nonn
AUTHOR
Robert G. Wilson v and Jeff Burch, Jan 29 2003
EXTENSIONS
a(7)-a(10) from Robert G. Wilson v, Feb 04 2006
STATUS
approved