

A091129


Number of primes of the form 8k+7 less than 10^n.


4



1, 6, 43, 308, 2399, 19669, 166237, 1440406, 12711702, 113766208, 1029523130, 9401993203, 86516416092, 801235499451
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OFFSET

1,2


COMMENTS

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


LINKS

Table of n, a(n) for n=1..14.
Eric Weisstein's World of Mathematics, Modular Prime Counting Function
Distribution of Primes [From Bernhard Helmes (pi(AT)devalco.de), Apr 21 2010]


CROSSREFS

Cf. A091126, A091127, A091128.
Sequence in context: A099322 A014989 A015552 * A091128 A025594 A098665
Adjacent sequences: A091126 A091127 A091128 * A091130 A091131 A091132


KEYWORD

nonn


AUTHOR

Eric W. Weisstein, Dec 19 2003


EXTENSIONS

a(10) from Robert G. Wilson v, Dec 22 2003
a(11)  a(14) from Bernhard Helmes (pi(AT)devalco.de), Apr 21 2010


STATUS

approved



