

A091119


Number of primes of the form 6k+5 less than 10^n.


1




OFFSET

1,2


COMMENTS

Computed by T. D. Noe, Dec 19, 2003.


LINKS

Table of n, a(n) for n=1..10.
Eric Weisstein's World of Mathematics, Modular Prime Counting Function


FORMULA

a(n)=A006880(n)2A091115(n).  R. J. Mathar, Jul 20 2007


CROSSREFS

Cf. A091118. Equals 1+A091116.
Sequence in context: A225785 A098206 A104911 * A046023 A183721 A180797
Adjacent sequences: A091116 A091117 A091118 * A091120 A091121 A091122


KEYWORD

nonn,more


AUTHOR

Eric W. Weisstein, Dec 19, 2003


EXTENSIONS

a(10) from Robert G. Wilson v, Dec 22 2003


STATUS

approved



